JP5736543B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture that uses an LED (light emitting diode) as a light source and is attached to a ceiling surface to illuminate a lower space side.

2. Description of the Related Art Conventionally, a lighting fixture that uses an LED as a light source and is attached to a ceiling surface to illuminate a lower space side is known (see, for example, Patent Document 1).
As illustrated in FIG. 27, the lighting fixture 100 described in Patent Literature 1 includes a fixture main body 103 that is supported by being suspended from a ceiling surface 101 via an electric wire 102. A plurality of LEDs 104 that irradiate light to the lower space side are mounted on the bottom surface of the instrument body 103. The instrument body 103 is formed in an octagonal shape when viewed from above, and a light guide body 105 made of a light-transmitting material such as acrylic resin and optically coupled with an LED 104 as a light source is attached to each side. It has been.

Each light guide 105 is formed in a trapezoidal flat plate shape, and is provided with a reflective layer (not shown) made of, for example, silver plating to reflect light, so that the light of the LED 104 is emitted to the other surface side. It is configured to be. In addition, a diffusion plate 106 that diffuses the light of the LED 104 provided in the instrument main body 103 is provided below the instrument main body 103.
Thereby, the light distribution can be easily changed by changing the direction of the light guide 105.

Japanese Patent No. 4363387 (FIG. 1)

By the way, conventionally, in the ceiling light using LED, changing light quantity and light color is performed.
However, the amount of light and light color are set for the light distribution of the entire room, and the atmosphere of the entire room and the part of the room such as the ceiling, wall and floor are not illuminated. was there.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a lighting apparatus that can change the atmosphere of a room by a control pattern for controlling a plurality of light sources.

The luminaire of the present invention is a luminaire attached to a ceiling, and an upper side LED substrate and a plurality of upper side LEDs arranged on the upper side LED substrate along a longitudinal direction of the upper side LED substrate. plurality having a plurality of upper units having a light source, and a lower-side LED substrate, in the lower side LED on a substrate, a plurality of lower side LED light sources are arranged along the longitudinal direction of the lower side LED substrate, the The lower unit and the upper unit are attached so as to emit light to the outside, and the lower unit is attached so as to be able to illuminate the entire space below the lighting fixture at a position on the lower side and the outer side of the upper unit. an instrument body, for each each of the plurality of upper unit and the plurality of lower units, tone Control has a toning control, control unit for switching control of the on / off, and wherein in the state in which the lighting fixture is attached to the ceiling, each upper unit is wall by the light emitted outside is illuminated, selecting said control unit includes a first mode for changing the light color in the light amount constant, and a second mode for changing the light quantity with light color constant, and a third mode for changing the light quantity and light color co, the In addition, the light quantity of the upper unit and the light quantity of the lower unit can be individually adjusted by the output ratio.

  Moreover, the lighting fixture of this invention can select the 4th mode suitable for the said control part to view television.

  INDUSTRIAL APPLICABILITY The present invention can provide a luminaire having an effect that the effect of the room and the atmosphere can be easily changed by the control unit selecting the third mode from the first mode.

The whole perspective view which looked at the lighting fixture of 1st Embodiment which concerns on this invention from the downward direction The exploded perspective view which looked at the lighting fixture of 1st Embodiment which concerns on this invention from the downward direction Sectional drawing which passes along the center of the lighting fixture of 1st Embodiment which concerns on this invention Schematic sectional view of the instrument body of the first embodiment according to the present invention. Exploded perspective view of the lower unit Explanatory drawing which shows the direction of the light of the lower unit irradiated through a lens cover Disassembled perspective view of instrument body and reflector (A) is the bottom view which looked at the reflecting plate from the lower part, (B) is the side view seen from B direction in (A), (C) is the side view seen from C direction in (A). Schematic enlarged view showing the cross-sectional shape at the position IX-IX in FIG. Schematic enlarged view showing the cross-sectional shape at the position XX in FIG. Top view of the luminaire as seen from above Exploded perspective view of upper unit Explanatory drawing showing the light irradiation direction of the upper unit Sectional drawing which shows the attachment part of an instrument main body, a reflection member, and an upper frame (A) is sectional drawing which shows the case where the upper surface of an upper frame is parallel with respect to a ceiling surface, (B) is sectional drawing which shows the case where it has an angle (A) is a bottom view of the panel viewed from below, and (B) to (D) are enlarged views showing examples of holes. (A) is another example of the panel cover, and is a bottom view of the panel showing the case where the panel cover is smaller than the panel width, and (B) is a bottom view showing the case where the panel cover is provided along the four sides of the panel. Figure, (C) is a bottom view when a panel cover is provided on a circular panel. Explanatory drawing showing an example of a room to illuminate (A) is explanatory drawing which shows the light distribution state of the room in 1st mode, (B) is a table | surface which shows the light color and light quantity of illumination light (A) is explanatory drawing which shows the light distribution state of the room in 2nd mode, (B) is the table | surface which shows the light color and light quantity of illumination light (A) is explanatory drawing which shows another light distribution state of the room in 2nd mode, (B) is a table | surface which shows the light color and light quantity of illumination light (A) is explanatory drawing which shows the light distribution state of the room in 3rd mode, (B) is a table | surface which shows the light color and light quantity of illumination light (A) is explanatory drawing which shows another light distribution state of the room in 3rd mode, (B) is a table | surface which shows the light color and light quantity of illumination light (A) is explanatory drawing which shows the light distribution state of the room in 4th mode, (B) is the table | surface which shows the light color and light quantity of illumination light The exploded perspective view which looked at the lighting fixture of 2nd Embodiment which concerns on this invention from the downward direction The bottom view which shows arrangement | positioning of the reflecting plate and lower unit which are used with the lighting fixture of 2nd Embodiment which concerns on this invention. Cross-sectional view of a conventional lighting fixture

(First embodiment)
Hereinafter, the lighting fixture of 1st Embodiment which concerns on this invention is demonstrated using drawing.
In addition, in the following description, the case where a lighting fixture is attached to a to-be-attached surface and the lower space side is illuminated is demonstrated.
Therefore, unless otherwise indicated, upper (upper space side, upper side, etc.) means the ceiling surface side, and lower (lower space side, lower side, etc.) means the floor surface side.

As shown in FIG. 1, the lighting fixture 10 of 1st Embodiment which concerns on this invention is suitable for attaching to the ceiling surface 11 grade | etc., Which is a to-be-attached surface, and mainly illuminating the lower space side.
As shown in FIG. 2 and FIG. 3, the lighting fixture 10 has, for example, a square plate-like fixture main body 20 having a fitting 21 for attachment to the hook ceiling 12 attached to the ceiling surface 11.
An upper unit 30, an upper frame 32, and an upper panel 31 are provided on the upper side of the instrument body 20 (that is, the ceiling surface 11 side). Further, a lower unit 40 that is an LED unit and a reflecting plate 60 that is a reflecting member are provided on the lower side of the instrument body 20 (that is, the illumination direction side). A translucent panel 50 that diffuses the light is attached.

As shown in FIG. 4, the instrument body 20 is formed from a single sheet metal, and has an upper stage 201 parallel to the ceiling surface 11 in the attached state at the center, and a lower stage 202 outside the upper stage 201. Moreover, it has the upper vertical wall 203 between the upper stage 201 and the lower stage 202, and the lower vertical wall 204 which goes to the downward space side from the lower stage 202. FIG.
Here, the single sheet metal is not limited to one formed by bending a single metal plate, but includes one connected by welding or a connecting member (screw or the like).

The upper stage 201 on the ceiling surface 11 side has, for example, a square shape in plan view, and the upper vertical wall 203 is provided from the four sides to the lower space side. Similarly, the lower vertical wall 204 is provided from the four sides of the lower stage 202 to the lower space side.
An upper unit 30 having an upper-side LED light source 33 as a light source is attached to the outer surfaces of a pair of opposed upper vertical walls 203 so as to irradiate outward. Here, for example, one upper unit 30 is provided on each upper vertical wall 203 (see FIG. 11), but the number is not limited.
The upper surface of the lower stage 202 that is in front of the irradiation direction of the upper-side LED light source 33 in the instrument main body 20 is preferably subjected to a highly reflective coating such as white coating or mirror finishing.

A lower unit 40 having a lower LED light source 42 as a light source is attached to the inner surfaces of a pair of lower vertical walls 204 facing each other so as to irradiate inward of the instrument body 20. Here, for example, two lower units 40 are provided on each lower vertical wall 204 (see FIG. 11), but the number is not limited.
Accordingly, all the light sources of the upper side LED light source 33 and the lower side LED light source 42 are attached to the instrument body 20 made of one sheet metal.
As a result, a heat dissipation region R1 for the upper unit 30 and a heat dissipation region R2 for the lower unit 40 are formed.
In addition, it is also possible to form the instrument body 20 with polycarbonate or acrylic having a heat dissipation property with a thermal conductivity of 0.1 W / mK or more.

As shown in FIG. 7, an attachment fitting 21 for attaching the instrument main body 20 to the hooking ceiling 12 of the ceiling surface 11 is provided through the lower surface of the central portion of the instrument main body 20. Around the mounting bracket 21, a bracket case 24 surrounding the mounting bracket 21 is provided so as to protrude from the lower surface of the instrument body 20 to the lower space side over the entire circumference. A lid 61 is detachably attached to the metal case 24. A control unit 62 that controls lighting of the lighting fixture 10 is provided on the lower surface of the fixture body 20.
In addition, the lower surface 611 of the lid 61 and the lower surface 621 of the control unit 62 constitute a part of the reflection plate 60 as described later.
In addition, the instrument main body 20 is provided with a pair of mounting openings 25 along a pair of opposing sides where the lower unit 40 is not provided.

As shown in FIG. 5, the lower unit 40 has an elongated rectangular shape as a whole, and has a rectangular main body 43 in the lowermost layer. The main body 43 is made of acrylic in order to improve heat dissipation, and a pair of brackets 431 for attaching the lower unit 40 to the instrument main body 20 are provided.
As a result, the heat generated by the lower LED light source 42 can be efficiently dissipated, so that the lifetime of the lower unit 40 can be significantly extended.

  On the main body 43, an LED substrate 44 on which a plurality of lower-side LED light sources 42 are mounted is attached. For example, the lower-side LED light sources 42 are arranged on a straight line on the LED substrate 44.

On the main body 43, a lower-side LED light source 42 and a translucent lens cover 45 formed of a flame-retardant resin that covers the LED substrate 44 as a lens are disposed.
This prevents the user or the like from directly touching the lower-side LED light source 42 and enables the light emitted from the lower-side LED light source 42 to be collected.

Further, as shown in FIG. 6, the light emitted from the lower LED light source 42 passes through the lens cover 45, and is irradiated from the parallel to the ceiling surface 11 by an angle θ <b> 1 on the mounting surface side. The condensing angle at this time is 2 · θ2. For example, the angle θ1 can be set to 5 degrees and the angle θ2 can be set to 10 degrees.
Instead of setting the irradiation direction by the lower unit 40 by the angle θ1 to the attached surface side by the lens cover 45, the orientation of the lower LED light source 42 can be set by the angle θ1 in advance to the attached surface side.

As shown in FIGS. 3 and 7, an overall rectangular reflector 60 that is slightly smaller than the instrument body 20 is attached to the lower space side of the instrument body 20 (downward in FIG. 3) (see FIG. 2). ).
That is, the reflecting plate 60 is attached to the inner side of the lower unit 40 attached to the outer edge of the instrument body 20, and the lower surface is white-coated or mirror-finished so as to reflect light. The lower unit 40 irradiates light toward the lower surface of the reflecting plate 60.
For convenience of explanation, FIGS. 8 to 10 are illustrated with the lower side in use in the upper side.

As shown in FIGS. 7 and 8, the reflecting plate 60 has an overall rectangular shape, and has a substantially quadrangular pyramid shape pointed toward the lower space (upward in FIGS. 8 to 10). The outer periphery 601 consisting of four sides of the reflecting plate 60 is in a single plane, and a pair of mounting openings 66 are provided along a pair of opposing sides where the lower unit 40 is not provided.
The inside of the outer periphery 601 is an inclined surface that avoids the mounting bracket 21, and is divided into four regions 631 (indicated by hatching in FIG. 11), 632 divided by lines connecting the center points 602 of the opposing outer periphery 601. , 633, 634.
In the following description, the areas are collectively referred to as “area 63”.

Each region 63 has a rectangular shape in plan view, and includes two orthogonal outer peripheries 601 and 601 and two intersecting lines L1 and L1 that are boundaries between adjacent regions 63. Each region 63 is inclined toward the vertex P1 of the reflecting plate 60, and the vertex P1 is the highest in the downward space side.
Each region 63 is partitioned into a corner point P2 side and a vertex P1 side by a partition line L2 connecting the two center points 602 and 602. Further, the apex P1 side has a demarcation line L3 in the vicinity of the apex P1 and substantially parallel to the demarcation line L2, and a demarcation line L4 that widens from the apex P1 side toward the outer periphery 601 in the vicinity of the intersection line L1. .

Based on FIG. 9, a configuration of a cross section along a line (indicated by a two-dot chain line in FIG. 8A) connecting the vertex P <b> 1 and the corner point P <b> 2 in each region 63 will be described. In FIG. 9, the vertical dimension is exaggerated.
A space between the corner point P2 and the intersection point P3 with the lane marking L2 is formed by a circle having a radius R1 that is convex upward (downward in the drawing) (hereinafter referred to as “circle R1”). In addition, the space between the intersection point P3 and the intersection point P4 with the partition line L3 is formed by a circle (indicated by “circle R2”) having a radius R2 that protrudes upward (downward in the drawing). At the intersection point P3, the tangent line of the circle R1 and the tangent line of the circle R2 coincide with each other, and the circle R1 and the circle R2 are smoothly connected with no clear boundary.
The radii of both circles R1 and R2 are R1> R2.

  Between the intersection point P4 and the vertex P1, a circle having a radius R3 (hereinafter referred to as “circle R3”) convex toward the lower space (upward in the drawing) is formed. At the intersection point P4, the tangent line of the circle R2 and the tangent line of the circle R3 coincide, and the circles R2 and R3 are smoothly connected and there is no clear boundary. Further, at the vertex P1, the tangent line of the circle R3 is horizontal.

Next, the relationship with the adjacent area | region 63 is demonstrated based on FIG. In FIG. 10, the vertical dimension is exaggerated.
As shown in FIG. 10, a circle having a radius R4 (indicated by “circle R4”) convex toward the lower space (upward in the figure) between the division lines L4 and L4 across the intersection line L1 of the adjacent regions 63. Consists of. The tangent line of the circle R4 is horizontal on the intersection line L1.
As shown in FIG. 8A, the division lines L4 and L4 become narrower toward the vertex P1 and cross and disappear at the division line L3. For this reason, the circle R4 also disappears at the lane marking L3.

  On the outside of the circle R4, the convex circle R2 continues to the upper space side described above. The tangent line of the circle R4 and the tangent line of the circle R2 on the partition line L4 coincide with each other, and the circle R4 and the circle R2 are smoothly connected with no clear boundary. Note that the circle R1 and the circle R2 have radii R1 and R2 in the cross section shown in FIG. 9, respectively, and the radii are different in the cross section shown in FIG. Is indicated by R2B.

As shown in FIG. 7 and FIG. 8 (A), a mounting bracket opening 64 is provided at the center of the reflector 60 corresponding to the bracket case 24 provided in the instrument body 20. A lid 61 is detachably attached to the opening 64 for use.
Thereby, the attachment bracket 21 can be attached to and detached from the hooking ceiling 12.
Note that the lower surface 611 of the lid 61 is formed in the shape described above and reflects light in the same manner as the reflector 60.

In addition, an opening 65 for the control unit 62 attached to the instrument body 20 is provided at a predetermined position of the reflection plate 60, and the lower surface 621 of the control unit 62 is exposed from the opening 65 to the surface of the reflection plate 60. ing. Thereby, thickness reduction of the reflecting plate 60 is achieved. Here, for example, it is disposed across the intersection line L1 and the pair of partition lines L4, L4, and the lower surface 621 of the control unit 62 is formed in the above-described shape, and is light like the reflector 60. Is supposed to be reflected.
Therefore, the reflector 60 is formed in the shape described above with the lid 61 and the control unit 62 attached.

Therefore, the light emitted from the lower unit 40 is irradiated toward the reflecting plate 60 and reflected to the lower space side. At this time, since the shape of the reflector 60 is formed by a combination of arcuate surfaces having a predetermined radius and is configured so that the tangent line at the boundary of each circle is common, it is reflected uniformly and is reflected on the panel 50. Incident.
As a result, as shown in FIG. 7, even when two lower units 40 are arranged at a predetermined interval, it is possible to irradiate light to a corresponding region between both lower units 40. Can be prevented.

As shown in FIG. 14, an upper frame 32 is disposed on the upper side of the instrument body 20, and a reflecting plate 60 is disposed on the lower side of the instrument body 20. A locking projection 322 is provided on the upper frame 32 so as to project to the lower space side, and penetrates the mounting opening 25 of the instrument body 20 and the mounting opening 66 of the reflector 60 from the upper side of the instrument body 20. The lower surface of the reflection plate 60 is locked.
Thereby, while connecting the reflecting plate 60 and the instrument main body 20 with the screw | thread 23, the reflecting plate 60, the instrument main body 20, and the upper frame 32 are connected integrally.

As shown in FIG. 11, the upper unit 30 is attached to the outer surface of the upper vertical wall 203 of the instrument body 20 provided so as to surround the mounting bracket 21 provided in the instrument body 20, and faces outward. Irradiate light.
Moreover, the upper unit 30 is arrange | positioned inside the lower unit 40 (displayed with the broken line in FIG. 11) in the instrument main body 20 in planar view.

The planar arrangement of the upper unit 30 may be a position close to the mounting bracket 21, that is, the center side of the instrument body 20, or the outer edge side of the instrument body 20.
In the case of being close to the mounting bracket 21, it is possible to irradiate the indirect light to the ceiling surface 11 in a wider area, and the lighting fixture 10 feels floating and a feeling of thinness can be obtained.
Further, when provided on the outer edge side of the fixture body 20, since the upper unit 30 and the lower unit 40 are close to each other, the wiring for power supply is shortened, and dust accumulated on the upper surface of the lighting fixture 10 when used for a long period of time. Can be reduced.

As shown in FIG. 12, the upper unit 30 has an elongated rectangular shape as a whole, and has a rectangular main body 34 in the lowermost layer. The main body 34 is made of acrylic in order to improve heat dissipation, and a pair of brackets 341 for attaching the upper unit 30 to the instrument main body 20 are provided.
As a result, the heat generated by the upper LED light source 33 can be efficiently dissipated, so that the life of the upper unit 30 can be significantly extended.

  On the main body 34, an LED substrate 35 on which a plurality of upper LED light sources 33 are mounted is attached. For example, the upper side LED light sources 33 are arranged on a straight line in a row on the LED substrate 35.

On the main body 34, a translucent lens cover 36 formed of a flame-retardant resin that covers the upper LED light source 33 and the LED substrate 35 is disposed.
This prevents the user or the like from directly touching the upper LED light source 33 and allows the light emitted from the upper LED light source 33 to be collected.

  As shown in FIG. 13, it is desirable that the light emitted from the upper LED light source 33 is irradiated to the ceiling surface 11 side (attached surface side) from the horizontal by passing through the lens cover 36. Alternatively, instead of setting the irradiation direction by the upper unit 30 to the attached surface side by the lens cover 36, the direction of the upper LED light source 33 can be set to the attached surface side in advance.

The height of the upper unit 30 is preferably larger than the height of the mounting bracket 21 attached to the instrument body 20.
Further, it is desirable that the light amount of the lower unit 40 be equal to or greater than the light amount of the upper unit 30.

As shown in FIG. 14, an upper frame 32 is disposed on the upper space side (ceiling surface 11 side) of the instrument body 20, and a locking protrusion 322 is directed to the lower space side on the lower surface of the upper frame 32. Projecting. The locking protrusion 322 passes through the opening 25 of the instrument body 20 and the attachment opening 66 of the reflector 60 and integrally attaches the upper frame 32, the instrument body 20, and the reflector 60.
On the other hand, the reflector 60 is attached to the instrument main body 20 by screws 23 (see FIG. 2), and the tip of the screw 23 may protrude in order to attach the reflector 60 made of a thin plate to the instrument main body 20 of a thin plate. .
For this reason, the height H1 of the upper frame 32 is set to be larger than the protruding amount H2 of the screw 23 protruding from the upper surface of the instrument body 20 so that the tip of the screw 23 does not protrude from the upper frame 32.

As shown in FIGS. 3 and 11, the upper frame 32 is positioned between the lower unit 40 and the upper unit 30 disposed on the center side of the instrument body 20 in a plan view from the lower unit 40 in the vertical direction. .
FIG. 15A shows a case where the upper surface 321 of the upper frame 32 is parallel to the ceiling surface 11. The upper surface 321 is light-impermeable and is preferably white-coated or mirror-finished.
In this case, since the light reflected by the upper surface 321 is irradiated to the nearby ceiling surface 11 side where the luminaire 10 is attached, the irradiation range to the ceiling surface 11 and the wall surface W (see FIG. 18) is relatively limited. Suitable for narrowing.

On the other hand, FIG. 15B shows a case where the upper surface 322 of the upper frame 32 has an angle with respect to the ceiling surface 11. The upper surface 322 is light-impermeable and is preferably white-coated or mirror-finished.
In this case, since the light reflected by the upper surface 322 reaches far by adjusting the inclination angle of the upper surface 322, it is suitable for the case where the irradiation range to the ceiling surface 11 and the wall surface W (see FIG. 18) is relatively wide. .
Note that the upper surface of the upper frame 32 may be formed by combining a surface parallel to the ceiling surface 11 and a surface having an angle.

As shown in FIGS. 2 and 3, the panel 50 is detachably attached to the lower space side of the lower unit 40. The panel 50 diffuses the irradiated light, and panel covers 51 with low light transmittance are provided at a plurality of locations.
As shown in FIG. 16, the panel cover 51 is provided along two opposing sides in the vicinity of the end portion of the panel 50 that is symmetric with respect to the center of the instrument body 20. Further, the panel cover 51 is provided corresponding to the position where the lower unit 40 is provided (indicated by a broken line in FIG. 16A).

Further, the panel cover 51 has at least a first hole 52, and a reception for receiving signals from a brightness sensor, a human sensor, a heat sensor, and a signal transmission device inside the first hole 52. At least one of the sensors is disposed.
Furthermore, the panel cover 51 has at least a second hole 53, and inside the second hole 53, transmission means for emitting a signal for indicating the operating state of the lighting fixture 10 is disposed.

The first hole 52 and the second hole 53 are preferably provided between the lower units 40 when a plurality of lower units 40 are provided in a straight line in the longitudinal direction (FIG. 16 ( A)).
For example, in the case where two lower units 40 are provided side by side in the longitudinal direction, the first hole 52 and the second hole 53 are formed at substantially the center of the panel cover 51 as shown in FIG. Can be provided.
Note that the number of holes 52 and 53 is not limited to two as shown in FIG. As shown in FIG. 16C, three holes 52, 53, and 54 can be provided, and as shown in FIG. 16D, four holes 52, 53, 54, and 55 can be provided.
Further, the shapes of the holes 52, 53, 54, and 55 are not limited to round holes.
Furthermore, the place where the holes 52, 53, 54, and 55 are provided is not limited to one panel cover 51, and can be provided in a plurality of panel covers 51.

FIGS. 17A to 17C show another example of the panel cover 51.
FIG. 17A shows a case where the length of the panel cover 511 is made smaller than the width of the panel 50 to narrow the light non-transmitting portion.
FIG. 17B shows a case where the panel cover 512 is provided along the four sides of the panel 50.
Further, FIG. 17C shows a case where two panel covers 513 are provided at symmetrical positions on the circular panel 50B. The panel cover 513 has a partial arc shape corresponding to the shape of the panel 50B.

Next, control of the lower unit 40 and the upper unit 30 by the control unit 62 will be described.
The control unit 62 can select the following modes by controlling the lower LED light source 42 of the lower unit 40 and the upper LED light source 33 of the upper unit 30.
That is, the control unit 62 views the first mode in which the light color is changed with a constant light amount, the second mode in which the light amount is changed with a constant light color, the third mode in which the light amount and the light color are changed simultaneously, and the television. A fourth mode suitable for doing so can be selected.

  As shown in FIG. 18, the room R illuminated by the luminaire 10 has a rectangular shape in plan view, and has four wall surfaces W1, W2, W3, and W4. A TV TV is placed on the lower space side of the wall surface W1, and a table T is placed in the center of the room R. The wall surface W4 is provided opposite to the wall surface W2, and is controlled in the same manner as W2.

FIG. 19 shows a first mode in which the light color is changed with a constant light amount. In this case, the control unit 62 controls the lower LED light source 42 and the upper LED light source 33 to maintain the output constant and change the light color. The change in the light color is adjusted by changing the ratio of the output of each color by providing the lower unit 40 and the upper unit 30 with the lower LED light source 42 and the upper LED light source 33 having different light colors. Can do. Or it can also adjust by changing the light color of each lower side LED light source 42 and each upper side LED light source 33. FIG.
That is, as shown in FIG. 19A, the lighting fixture 10 illuminates the entire room R brightly with a constant output. Then, as shown in FIG. 19B, the light color is changed from white to light bulb color at a constant output (in this case, for example, 100% output).

In the table of FIG. 19B, the ratio of white to bulb color is shown as white / bulb color. The ratio can vary continuously from white (100/0) to light bulb color (0/100).
Also, here, the case where the output is 100% is exemplified, but an illuminance sensor (not shown) is provided inside the first hole 52 of the panel cover 51 so that the light color is changed at a predetermined illuminance. Good.
Further, the control unit 62 can control the light amount and light color of the upper unit 30 and the lower unit 40 separately, and can individually adjust the light amount of the upper unit 30 and the light amount of the lower unit 40 by the output ratio. is there.

FIG. 20 shows a second mode in which the light amount is changed with a constant light color.
As shown in FIG. 20A, the lighting fixture 10 illuminates the entire room R, and particularly illuminates the table T brightly. For this reason, the control unit 62 controls the output of the lower unit 40 that illuminates the table T to be higher than the output of the upper unit 30 that illuminates the wall surface W so that the table T is illuminated brightly. For example, the output of the lower LED light source 42 that illuminates the table T in the lower unit 40 is set to 100%, and the outputs of the other lower LED light sources 42 and the upper LED light sources 33 are lowered.

At that time, as shown in FIG. 20B, the outputs of the lower unit 40 and the upper unit 30 are continuously set between 100% and 10%, for example, with a constant light color (here, 100% white). Can be changed.
In addition, as a special case, the case where the lighting fixture 10 is gradually turned off (that is, the case where the output is changed to 0%) can be included.

FIG. 21 shows another example of the second mode in which the light amount is changed with a constant light color.
As shown in FIG. 21A, the lighting fixture 10 mainly illuminates the ceiling surface 11 and the wall surface W of the room R. That is, the control unit 62 increases the output of the upper unit 30 that illuminates the ceiling surface 11 and the wall surface W to be higher than the output of the lower unit 40 that illuminates the floor surface side, so that the ceiling 11 and the wall surface W are illuminated brightly. Control.
At that time, as shown in FIG. 21B, the output of the upper unit 30 is continuously changed between 100% and 10%, for example, with a constant light color (here, 100% light bulb color). Can do.

FIG. 22 shows a third mode in which the light color and the light amount are changed.
As shown in FIG. 22A, the lighting fixture 10 illuminates the entire room R.
At that time, as shown in FIG. 22B, the control unit 62 controls the light amount and the light color of the upper unit 30 and the lower unit 40 at the same time to obtain the desired light color illumination light with the desired light amount. .

In the case where only the nightlight as shown in FIG. 23 is lit, the control unit 62 reduces the light quantity of the lower unit 40 and the upper unit 30 in the third mode shown in FIG. It can also be lit. At the same time, the control unit 62 can adjust the light color of the nightlight.
For example, as shown in FIG. 23B, the control unit 62 can adjust the light color between white and the light bulb color by limiting the upper limit of the output (light quantity) as a night light to 10%. .

FIG. 24 shows a fourth mode in which a light distribution state suitable for watching TV is set.
As shown in FIG. 24A, a light distribution state suitable for viewing a television is when the luminaire 10 illuminates only the upper part of the wall surface W1 on the television TV side and does not illuminate other parts of the room R. Can be illustrated.
In this case, the control unit 62 turns on only the upper unit 30 on the TV TV side among the upper units 30. The control unit 62 illuminates the upper portion of the wall surface W1 by turning on the upper unit 30 on the TV TV side with, for example, a light bulb color with a light amount of 100% output.
At this time, the control unit 62 can also change the light amount and light color of the upper unit 30A.

As described above, the lighting fixture 10 according to the first embodiment of the present invention described above is provided on the ceiling surface 11 side, and is provided on a plurality of upper units 30 that mainly illuminate the wall surface W, and on the lower space side of the upper unit 30. And a plurality of lower units 40 that mainly illuminate the floor surface. In addition, the lighting fixture 10 includes a control unit 62 that controls the upper unit 30 and the lower unit 40.
The control unit 62 can select a first mode for changing the light color with a constant light amount, a second mode for changing the light amount with a constant light color, and a third mode for simultaneously changing the light amount and the light color. It is. Further, the control unit 62 can individually adjust the light amount of the upper unit 30 and the light amount of the lower unit 40 by the output ratio.
For this reason, the control part 62 can change the production | presentation and atmosphere of the room R easily by selecting the 3rd mode from the 1st mode.

  Moreover, since the control part 62 can select the 4th mode suitable for watching TV TV, it can make the atmosphere of the room R at the time of watching TV TV.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment which concerns on this invention is demonstrated using drawing.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10 which concerns on 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIGS. 25 and 26, the reflector 60B in the luminaire 10B of the second embodiment has an inclined surface 67 that is inclined toward the lower space toward the center, and is pointed toward the entire lower space. Presents a shape. The lower surface of the reflection plate 60B is white-coated or mirror-finished so as to reflect light.
Both ends of the reflecting member 60B facing the pair of lower vertical walls 204 (see FIG. 4) of the instrument body 20 are notched and provided with openings 671, respectively. The lower unit 40 provided on the pair of lower vertical walls 204 protrudes from the opening 671 toward the lower space of the reflecting member 60B. Further, the central portion 672 is raised so as not to interfere with the mounting bracket 21 provided at the center of the instrument body 20.

Accordingly, the light emitted from the lower unit 40 is applied to the portion R of the panel 50 farthest from the lower unit 40, that is, the central portion 672 of the reflector 60. Then, the light is reflected to the lower space side at the inclined surface 67 and the central portion 672 and enters the panel 50.
As described above with reference to FIG. 6, the light emitted from the lower-side LED light source 42 is reliably reflected by the reflector 60B by passing through the lens cover 45 and irradiating the mounting surface side by the angle θ1. The light can be incident on the panel 50 to emit light.

Moreover, as shown with the reflecting plate 60 of 1st Embodiment, the opening part (64) for fittings can be provided in the center of the reflecting plate 60B, and a lid | cover (61) can also be attached detachably.
Further, an opening (65) for the control unit 62 may be provided in the reflection plate 60B, and the lower surface 621 of the control unit 62 may constitute a part of the reflection plate 60B.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, a human sensor may be provided inside the first hole 52 provided in the panel cover 51 of the panel 50, and the control unit 62 may adjust the amount of light based on a signal from the human sensor. .

10 Lighting equipment 11 Ceiling surface (attached surface)
30 Upper unit 33 Upper LED light source 40 Lower unit 42 Lower LED light source 62 Control unit TV TV W, W1 Wall surface

Claims (2)

A lighting fixture attached to the ceiling,
And the upper-side LED substrate, in the upper side LED on a substrate, a plurality of upper units having a plurality of upper side LED light sources are arranged along the longitudinal direction of the upper side LED substrate,
And said lower LED substrate, in the lower side LED on a substrate, a plurality of lower units having a plurality of lower side LED light sources are arranged along the longitudinal direction of the lower side LED substrate,
The upper unit is attached so as to emit light outward, and the lower unit is attached to the lower and outer positions of the upper unit so that the entire space below the lighting fixture can be illuminated,
A control unit that performs dimming control, toning control, and lighting / extinguishing switching control for each of the plurality of upper units and the plurality of lower units;
In a state where the lighting fixture is attached to the ceiling, the wall surface is illuminated by the light emitted from the upper units to the outside,
The control unit is
A first mode for changing the light color with a constant light amount;
A second mode for changing the amount of light with a constant light color;
A third mode for changing the light quantity and light color co, as well as a possible selection,
The lighting fixture which can adjust separately the light quantity of the said upper unit, and the light quantity of the said lower unit by output ratio. The lighting fixture according to claim 1,
A lighting apparatus in which the control unit can select a fourth mode suitable for watching television.

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