JP2010272358A - Reflecting shade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflecting shade for an illumination fixture by which the irradiation direction of light from the illumination fixture is made possible to change readily, and an appropriate irradiation range is made possible to be set, according to a state of an object to be irradiated. <P>SOLUTION: The reflecting shade which reflects the light of a light source lamp 50 of the illumination fixture in the irradiation direction is equipped with movable reflecting plates 10, each of which has a reflecting face 1 to reflect the light of the light source lamp 50 and is arranged so as to surround the light source lamp 50; and angle changing mechanisms 20, each of which changes an angle of the movable reflecting plate 10 with respect to the light source lamp 50. An operation section 14 of each of the angle-changing mechanisms 20 is installed on the reflecting surface 1 side of the movable reflecting plate 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a reflective shade that reflects light from a light source lamp of a lighting fixture in an irradiation direction.

  Lighting fixtures such as room lights, downlights, spotlights, and vehicle headlights are provided with a reflective shade having a reflective surface that reflects light from the light source lamp in the irradiation direction in order to improve the irradiation efficiency.

  As a reflection shade for a general lighting fixture, a combination of a plurality of trapezoidal reflectors is known (see, for example, Patent Document 1).

  The reflective shade of Patent Document 1 has a typical structure in which a trapezoidal reflector is connected in the horizontal direction to form a shade-like structure. This reflective shade is used in a lighting fixture that is suspended from the ceiling and illuminates the lower part.

  In recent years, in order to efficiently use lighting fixtures in various situations, a reflective shade that makes the reflective shade movable and can control light distribution has been developed (for example, patent literature). 2).

  The reflective shade used in the lighting fixture of Patent Document 2 allows a socket to which a light source lamp is attached to be movable in the front-rear direction along the optical axis, and rotates a plurality of reflectors according to the movement of the socket. The reflection curvature of the reflector can be changed. Here, the movement of the socket is performed by rotating a rotary knob provided behind the socket and moving a screw rod that rotates together with the rotary knob back and forth with respect to the fixed base plate of the lighting fixture. In addition, the plurality of reflectors that rotate with the movement of the socket are all performed simultaneously with the same operation.

Design Registration No. 1338501 JP-A-5-325602

  Lighting fixtures can be installed in a manner that hangs from the ceiling, a form that is directly attached to the ceiling or wall, a form in which a hole is made in the ceiling or wall, and is embedded therein. In these installation forms, when the lighting apparatus is installed, it is continuously used as it is. Therefore, in the conventional lighting fixtures, it has not been expected to change the light irradiation direction.

  However, when the irradiation target of the lighting fixture is changed or the irradiation target is moved, there is a case where it is desired to change the light irradiation range and the irradiation direction.

  In this regard, the reflecting shade of Patent Document 1 is a typical conventional type of reflecting shade in which eight reflectors are fixed to a shade-like structure. Therefore, basically, the reflection direction of light from the light source lamp is determined. It cannot be changed. In the illuminating device using the reflective shade of Patent Document 1, if the direction of light irradiation is to be changed, the reflective shade is once removed from the luminaire, and another reflective shade assembled at a desired angle is used again as the luminaire. It will be extremely troublesome to install. However, it is unrealistic to perform such work.

  On the other hand, the reflection shade of patent document 2 can change the reflective curvature of a reflecting plate by rotating a reflecting plate according to the movement of a socket. Therefore, it is possible to expand the light irradiation range or narrow the irradiation range like spot light. However, in order to rotate the reflecting plate in the reflecting shade, as described above, the rotating knob provided behind the socket is rotated, and the screw rod that rotates together with the rotating knob is used as the fixed base plate of the lighting fixture. It is necessary to move back and forth. However, once the irradiation device is installed, it is extremely difficult to reach the back of the socket and operate the rotary knob. In particular, in a ceiling-embedded luminaire, it is substantially impossible to access the rear of the socket after installation.

  Moreover, in the reflecting shade of Patent Document 2, since all of the plurality of reflecting plates rotate simultaneously in the same operation, the irradiation range around the optical axis can be enlarged or reduced, but the irradiation range can be moved, The irradiation range cannot be enlarged or reduced in a specific direction.

  The present invention has been made in view of the above-described problems, and the object thereof is to enable easy change of the irradiation direction of light from a lighting fixture, and appropriate irradiation according to the state of an irradiation target. An object of the present invention is to provide a reflective shade for a luminaire that allows the range to be set.

The characteristic configuration of the reflective shade according to the present invention for solving the above problems is as follows.
A reflective shade that reflects the light of the light source lamp of the lighting fixture in the irradiation direction,
A movable reflector having a reflecting surface for reflecting the light of the light source lamp and disposed so as to surround the light source lamp;
An angle changing mechanism for changing an angle of the movable reflector with respect to the light source lamp;
With
The operation portion of the angle changing mechanism is provided on the reflective surface side of the movable reflector.

  According to the reflecting shade of this configuration, the operating portion of the angle changing mechanism that changes the angle of the movable reflecting plate with respect to the light source lamp is provided on the reflecting surface side of the movable reflecting plate. For this reason, even after the irradiating device is installed on the ceiling or wall, the hand can easily reach the operation portion of the angle changing mechanism. As a result, the irradiation direction of light from the lighting fixture can be easily changed.

In the reflective shade according to the present invention,
It is preferable that a plurality of the movable reflectors are provided, and each movable reflector is configured to be individually changeable in angle.

  According to the reflector shade of this configuration, the angle of the plurality of movable reflectors can be changed individually. Therefore, even after the lighting fixture is installed, the irradiation range can be moved, or the scale can be enlarged or reduced in a specific direction. It becomes possible to do. As a result, even when the irradiation target moves, the irradiation target can be reliably illuminated.

In the reflective shade according to the present invention,
It is preferable that an extended reflection portion that reflects light leaked around the movable reflector is provided.

  According to the reflective shade of this configuration, even if a gap is created around the movable reflector due to the change in the angle of the movable reflector, light that leaks around the movable reflector is reliably ensured by the extended reflector. Can be reflected. As a result, the reflection efficiency of the reflective shade is improved.

In the reflective shade according to the present invention,
The light source lamp is preferably fixed to a base of the lighting fixture.

  According to the reflecting shade of this configuration, the light source lamp is fixed to the base of the lighting fixture, so that the irradiation light can be stabilized. As a result, the fine adjustment of the irradiation intensity, the irradiation angle, and the irradiation range can be easily performed only by operating the movable reflector. Moreover, since the light source lamp does not move, the wiring of the lighting fixture can be simplified.

In the reflective shade according to the present invention,
It is preferable that a fixed reflector is provided outside the movable reflector as viewed from the mounting position of the light source lamp.

  According to the reflective shade of this configuration, since the fixed reflector is provided outside the movable reflector, depending on the irradiation of the predetermined range by the fixed reflector and the state of the irradiation target by the movable reflector. Irradiation in an arbitrary range can be performed simultaneously.

In the reflective shade according to the present invention,
It is preferable that the fixed reflector is configured to have a larger light diffusion rate than the movable reflector.

  According to the reflective shade of this configuration, the light that hits the inner movable reflector out of the light emitted from the light source lamp is reliably reflected in the set irradiation direction, and the light that hits the outer fixed reflector is sufficiently diffused Is done. Therefore, it is possible to reduce glare that people around the irradiation object feel while illuminating the irradiation object with certainty.

It is an upper perspective view of the reflective shade of the present invention. It is a downward perspective view of the reflective shade of the present invention. It is an enlarged view of the angle change mechanism of the reflective shade of this invention. In the reflective shade of the present invention, it is a sectional view in a state where four movable reflectors are in a wide angle position. In the reflective shade of the present invention, it is a sectional view in a state where four movable reflectors are in a narrow angle position. In the reflective shade of the present invention, it is a bottom view in the state where four movable reflectors are in a wide angle position. In the reflective shade of the present invention, it is a bottom view of the state where four movable reflectors are in a narrow angle position. In the reflection shade of the present invention, it is a bottom view in a state where two movable reflectors are in a wide angle position and the other two movable reflectors are in a narrow angle position. It is a table | surface which shows the illumination intensity measurement result (Example 1) using one reflection shade of this invention. It is a table | surface which shows the illumination intensity measurement result (Example 2) using two reflection shades of this invention.

  Embodiments relating to the reflective shade of the present invention will be described based on the drawings. However, the present invention is not intended to be limited to the configurations described in the embodiments and drawings described below, and includes configurations equivalent thereto.

  FIG. 1 is a top perspective view of a reflective shade 100 of the present invention. FIG. 2 is a lower perspective view of the reflective shade 100 of the present invention. FIG. 3 is an enlarged view of the angle changing mechanism of the reflective shade 100 of the present invention.

  The reflective shade 100 is used for the purpose of reflecting the light of the light source lamp 50 of the lighting fixture in the irradiation direction. The reflective shade 100 includes a movable reflective plate 10 and an angle changing mechanism 20 as main components, and further includes a fixed reflective plate 30.

  The movable reflector 10 has a reflecting surface 1 that reflects light from the light source lamp 50. In the present embodiment, one movable reflecting plate 10 is formed by connecting three trapezoidal reflecting surfaces 1 in the lateral direction. The four movable reflectors 10 are used so as to surround the light source lamp 50. In addition, one end of the movable reflector 10 is hinged to a first bracket 52 protruding from the base 51 of the light source lamp 50 so as to be rotatable.

  Of the three reflecting surfaces 1 constituting the movable reflecting plate 10, the central reflecting surface 1 is provided with an angle changing mechanism 20 that changes the angle of the movable reflecting plate 10 with respect to the light source lamp 50. The angle changing mechanism 20 has a sleeve 11 provided on the reflecting surface 1, an adjustment bar 12 penetrating the sleeve 11, one end fixed to the base 51 of the light source lamp 50, and the other end supporting the end of the adjustment bar 12. The second bracket 13 and the operation unit 14 for rotating the adjustment bar 12 are provided. Here, the inner circumferential surface of the sleeve 11 and the outer circumferential surface of the adjustment bar 12 are formed with screw grooves into which both are screwed, and by rotating the operation portion 14 attached to one end of the adjustment bar 12, The relative position of the adjustment bar 12 with respect to the sleeve 11 can be adjusted.

  Next, the operation of the movable reflector 10 will be described. FIG. 4 is a cross-sectional view taken along the line AA in a state where the four movable reflectors 10 are in the wide-angle position. FIG. 5 is a cross-sectional view taken along the line AA in a state where the four movable reflectors 10 are in a narrow angle position. FIG. 6 is a bottom view of the four movable reflectors 10 in the wide-angle position. FIG. 7 is a bottom view of the four movable reflectors 10 in a narrow angle position. FIG. 8 is a bottom view of the state in which the two movable reflectors 10 are in the wide-angle position and the other two movable reflectors 10 are in the narrow-angle position.

  When the user rotates the operation unit 14 of the angle changing mechanism 20 provided on the movable reflector 10 in the left direction, the sleeve 11 relatively moves in the distal direction of the adjustment bar 12. On the other hand, the second bracket 13 supports the end of the adjustment bar 12 as it is. Accordingly, the distance between the second bracket 13 and the sleeve 12 approaches, and accordingly, the movable reflector 10 is lifted with respect to the light source lamp 50 by the upward rotational movement around the first bracket 52 ( This is the state shown in FIGS. 5 and 7 and is defined as “narrow angle position” in this specification. Incidentally, the second bracket 13 at this time is slightly pulled toward the sleeve 11 and bent as shown in FIG.

  When the user rotates the operation unit 14 of the angle changing mechanism 20 provided on the movable reflector 10 in the right direction, the sleeve 11 relatively moves in the direction of the operation unit 14 of the adjustment bar 12. On the other hand, the second bracket 13 supports the end of the adjustment bar 12 as it is. Accordingly, the distance between the second bracket 13 and the sleeve 12 is increased, and accordingly, the movable reflector 10 is pulled down with respect to the light source lamp 50 by the downward rotational movement around the first bracket 52 ( 4 and 6 and is defined as “wide-angle position” in this specification. Incidentally, the second bracket 13 at this time is separated from the sleeve 11 and the bending is eliminated, as shown in FIG.

  Here, as shown in FIGS. 1 to 7, the operation unit 14 of the angle changing mechanism 20 is provided on the reflective surface 1 side of the movable reflector 10 (the side where the light source lamp 50 is present). For this reason, even after irradiating equipment is installed on the ceiling or wall, the hand can easily reach the operation unit 14 of the angle changing mechanism 20. As a result, the irradiation direction of light from the lighting fixture (light source lamp 10) can be easily changed.

  By the way, according to the reflective shade 100 of the present embodiment, the irradiation range can be enlarged / reduced around the optical axis of the light source lamp 50 as in the prior art, and further, the irradiation range can be moved or irradiated. It is also possible to enlarge or reduce the range in a specific direction. Such characteristic light irradiation is possible because the reflecting shade 100 of this embodiment is provided with a plurality of movable reflectors 10 (four in this embodiment), each movable type. This is because the reflecting plate 10 is configured to be individually changeable in angle.

  For example, as shown in FIG. 8, the two movable reflectors 10 can be in the wide-angle position, and the other two movable reflectors 10 can be in the narrow-angle position. In this case, the reflected light of the light source lamp 50 is biased in the lower right direction in plan view in FIG.

  Thus, with the reflective shade 100 of the present invention, it is possible to easily move the irradiation range or to enlarge / reduce it in a specific direction even after installing the lighting fixture. As a result, even when the irradiation target moves, the irradiation target can be reliably illuminated.

  The fixed reflector 30 is provided outside the movable reflector 10 when viewed from the mounting position of the light source lamp 50. In the present embodiment, a total of thirty-two trapezoidal reflecting surfaces 31 are connected in the horizontal direction over two steps so as to surround the light source lamp 50, and the annular fixed reflecting plate 30 is formed. With such a configuration, it is possible to simultaneously perform irradiation in a predetermined range by the fixed reflector 30 and irradiation in an arbitrary range according to the state of the irradiation target by the movable reflector 10.

  In addition, the reflective shade 100 of the present embodiment is provided with an extended reflecting portion 15 that reflects light leaking around the movable reflector 10. For this reason, even when a gap is created around the movable reflector 10 by changing the angle of the movable reflector 10, the extended reflector 15 reliably reflects light leaking around the movable reflector 10. Can be made. As a result, the reflection efficiency of the reflection shade 100 is improved.

  Furthermore, in the reflective shade 100 of this embodiment, the light source lamp 50 is fixed to the base 51 of the lighting fixture. Due to such a structure, the irradiation light from the light source lamp 50 can be stabilized. As a result, the fine adjustment of the irradiation intensity, the irradiation angle, and the irradiation range can be easily performed only by operating the movable reflector 10. Moreover, since the light source lamp 50 does not move, the wiring of the lighting fixture can be simplified.

  In the present embodiment, the reflective shade 100 has a bell-like shape in which the inner diameter gradually increases from the mounting position of the light source lamp 50, as shown in FIGS. 1, 2, 4, and 5. It has become. For this reason, the amount of deformation of the reflected image (projected image) of the light source lamp 50 is small just below the reflecting shade 100 and the necessary intensity of irradiation light can be secured, but the reflected image (projected) is located at a position away from directly below the reflecting shade 100. Since the image is stretched, the intensity of the irradiated light is likely to be reduced. Therefore, in the present embodiment, the reflective surface 1 of the movable reflective plate 10 and the reflective surface 31 of the fixed reflective plate 30 are arranged in multiple stages so as to surround the light source lamp 50. Thereby, the number of reflection images of the light source lamp 50 reflected by the reflection surface 1 and the reflection surface 31 increases. In the reflective shade 100 of the present embodiment, since there are a total of 44 reflective surfaces 1 and 31 reflective surfaces, the number of reflected images is also 44. As a result, the texture of the reflected light (projection light) is finer and less uneven. As a result, it is possible to obtain relatively high quality reflected light (projection light) even at a position away from just below the reflective shade 100. Moreover, when the number of the reflective surfaces 1 and the reflective surfaces 31 is increased as in the present embodiment, the reflective shade 100 having a high-class design and excellent design can be realized. In addition, the number of steps of the reflecting surface 1 and the reflecting surface 31 can be increased as appropriate according to various conditions such as the size of the lighting fixture, the irradiation distance, and the irradiation range. In the present embodiment, the reflective shade 100 is shaped like a bell. However, for example, it is possible to change the appearance by providing a constriction at the intermediate portion.

  In the reflective shade 100, there is also a demand for reducing the glare in the vicinity while sufficiently illuminating the irradiation target. Therefore, in the reflective shade 100 of the present embodiment, the fixed reflective plate 30 disposed on the outer side as viewed from the mounting position of the light source lamp 50 is lighter than the movable reflective plate 10 disposed on the inner side. The diffusion rate is increased. For example, the light diffusivity of the fixed reflector 30 is set to 84% or more, and the light diffusivity of the movable reflector 10 is set to less than 12%. As a result, of the light emitted from the light source lamp 50, the light that strikes the movable reflector 10 is reliably reflected in the illumination direction, and the light that strikes the fixed reflector 30 is sufficiently diffused. Accordingly, it is possible to reduce glare that people around the irradiation object feel while illuminating the irradiation object with sufficient brightness. The light diffusivity can be adjusted to an appropriate value by subjecting the metal plate before assembly to surface treatment such as sandblasting or chemical polishing.

  Next, the specific Example performed using the reflective shade 100 of this invention is demonstrated.

  In Example 1, one reflecting shade 100 having 44 reflecting surfaces described in the above embodiment was used. A light source lamp 50 having an output of 150 W was mounted on the reflective shade 100 and installed at a predetermined position (horizontal distance: 0 mm, vertical distance: 0 mm) in the darkroom. The movable reflector 10 was set to (1) a narrow angle position, (2) an intermediate angle position, and (3) a wide angle position, and the illuminance of the irradiated light was measured. In the measurement, illuminance (unit: lux) was measured with an illuminometer at a point where the horizontal distance from the reflecting shade 100 was 0 to 2000 mm and a vertical distance from the reflecting shade 100 was 2000 to 4000 mm. The measurement results are shown in the table of FIG.

  (1) At a narrow angle position, a brightness of 3723 lux was measured immediately below the reflecting shade 100 (horizontal distance: 0 mm, vertical distance: 2000 mm). The illuminance gradually decreases as the distance from the reflecting shade 100 increases, and becomes 945 lux at the position farthest from the reflecting shade 100 in the vertical direction (horizontal distance: 0 mm, vertical distance: 4000 mm), and the position farthest in the horizontal direction ( (Horizontal distance: 2000 mm, vertical distance: 4000 mm), it was 185 lux.

  (2) At an intermediate angle position, a brightness of 3378 lux was measured immediately below the reflective shade 100 (horizontal distance: 0 mm, vertical distance: 2000 mm). The illuminance gradually decreases as the distance from the reflecting shade 100 increases, and becomes 683 lux at the position farthest from the reflecting shade 100 in the vertical direction (horizontal distance: 0 mm, vertical distance: 4000 mm), and the position farthest in the horizontal direction ( The horizontal distance was 2000 mm and the vertical distance was 4000 mm.

  (3) At a wide-angle position, a brightness of 2669 lux was measured immediately below the reflective shade 100 (horizontal distance: 0 mm, vertical distance: 2000 mm). The illuminance gradually decreases as the distance from the reflecting shade 100 increases, and becomes 558 lux at the position farthest from the reflecting shade 100 in the vertical direction (horizontal distance: 0 mm, vertical distance: 4000 mm), and the position farthest in the horizontal direction ( The horizontal distance was 2000 mm and the vertical distance was 4000 mm.

  From the measurement results of (1) to (3) above, it was confirmed that the illuminance of light was equalized as the movable reflector 10 of the reflector 100 was moved from the narrow angle position to the wide angle position. As described above, when the reflective shade 100 of the present invention is used, it is possible to easily realize uniform light irradiation by a simple operation only by adjusting the angle of the movable reflector 10.

  In Example 2, two reflecting shades 100 having 44 reflecting surfaces described in the above embodiment were used. A light source lamp 50 with an output of 150 W was attached to each of the reflective shades 100, and these were arranged in the dark room with a distance of 2000 mm to 4000 mm depending on the angle of the movable reflector 10. The angle of the movable reflecting plate 10 in each of the reflecting shades 100 is set to (1) a narrow angle position, (2) an intermediate angle position, and (3) a wide angle position, which are the same angles as in the first embodiment. Was measured. In the measurement, the illuminance (unit: lux) was measured with an illuminometer at a point where the horizontal distance from each reflecting shade 100 was 500 mm and a point where the vertical distance from the reflecting shade 100 was 2000 to 4000 mm. The measurement results are shown in the table of FIG.

  (1) At a narrow angle position, a brightness of 3817 lux was measured immediately below the reflective shade 100 (horizontal distance: 0 mm and 2000 mm, vertical distance: 2000 mm). The illuminance gradually decreases as the distance from the reflecting shade 100 increases, and becomes 1130 lux at the position farthest from the reflecting shade 100 in the vertical direction (horizontal distance: 0 mm and 2000 mm, vertical distance: 4000 mm), and is the farthest in the horizontal direction. The position (horizontal distance: 1000 mm, vertical distance: 4000 mm) was 1148 lux.

  (2) At an intermediate angle position, a brightness of 3378 lux was measured immediately below the reflective shade 100 (horizontal distance: 0 mm and 3500 mm, vertical distance: 2000 mm). The illuminance gradually decreases as the distance from the reflecting shade 100 increases, and becomes 683 lux at the position farthest from the reflecting shade 100 in the vertical direction (horizontal distances: 0 mm and 3500 mm, vertical distance: 4000 mm), which is the farthest in the horizontal direction. It was 628 lux at the position (horizontal distance: 1500 mm and 2000 mm, vertical distance: 4000 mm).

  (3) At a wide-angle position, a brightness of 2669 lux was measured immediately below the reflecting shade 100 (horizontal distance: 0 mm and 4000 mm, vertical distance: 2000 mm). The illuminance gradually decreases as the distance from the reflecting shade 100 increases, and becomes 558 lux at the position farthest from the reflecting shade 100 in the vertical direction (horizontal distance: 0 mm and 4000 mm, vertical distance: 4000 mm), which is the farthest in the horizontal direction. The position (horizontal distance: 2000 mm, vertical distance: 4000 mm) was 510 lux.

  From the measurement results of (1) to (3) above, it was confirmed that the illuminance of light was equalized as the movable reflectors 10 of the two reflecting shades 100 were moved from the narrow angle position to the wide angle position. . Further, it was confirmed that the illuminance of light can be more equalized when two reflecting shades 100 are used than when one reflecting shade 100 is used. As described above, when the reflective shade 100 of the present invention is used, it is possible to easily realize uniform light irradiation by a simple operation only by adjusting the angle of the movable reflector 10.

  The reflective shade of the present invention can be suitably used in lighting devices such as room lights, downlights, spotlights, and vehicle headlights.

DESCRIPTION OF SYMBOLS 1 Reflective surface 10 Movable reflector 14 Operation part 15 Extended reflection part 20 Angle change mechanism 30 Fixed reflector 50 Light source lamp 51 Base 100 Reflector shade

Claims (6)

A reflective shade that reflects the light of the light source lamp of the lighting fixture in the irradiation direction,
A movable reflector having a reflecting surface for reflecting the light of the light source lamp and disposed so as to surround the light source lamp;
An angle changing mechanism for changing an angle of the movable reflector with respect to the light source lamp;
With
A reflective shade in which an operation portion of the angle changing mechanism is provided on the reflective surface side of the movable reflector.   The reflection shade according to claim 1, wherein a plurality of the movable reflection plates are provided, and each of the movable reflection plates can be individually changed in angle.   The reflecting shade according to claim 2, further comprising an extended reflecting portion that reflects light leaked around the movable reflecting plate.   The said light source lamp is a reflective shade as described in any one of Claims 1-3 currently fixed to the base of the said lighting fixture.   The reflective shade according to any one of claims 1 to 4, wherein a fixed reflector is provided outside the movable reflector as viewed from the mounting position of the light source lamp.   The reflection shade according to claim 5, wherein the fixed reflection plate is configured to have a higher light diffusion rate than the movable reflection plate.

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