JP2007265861A - Illumination fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain sufficient brightness feeling by an illumination fixture using a light emitting diode of a less light amount. <P>SOLUTION: A first light source 120 has a first light emitting diode 121 and a reflecting plate 122, and irradiates the front direction of the illumination fixture 100. A second light source 130 has a second light emitting diode 131 and the reflecting plate 132, and irradiates the direction at an acute angle to the direction irradiated by the first light source 120. The illumination fixture 100 is used by fixing it to a ceiling or in the vicinity of the ceiling, the first light source 120 irradiates a floor face of the room, and the second light source 130 irradiates a wall face of the room. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a luminaire using a light emitting diode light source.

Currently, research and development for increasing the output of light emitting diodes is underway.
JP 2005-149790 A

When the output of the light emitting diode is increased, the power consumption increases, so the heat generation increases and the deterioration due to the temperature rise occurs. For this reason, the light emitting diode cannot be made to have a very high output, and there is a problem that the amount of light is insufficient for use as indoor lighting.
The present invention has been made, for example, in order to solve the above-described problems, and an object of the present invention is to obtain a luminaire having sufficient brightness by using a light emitting diode with a small amount of light.

The lighting apparatus according to the present invention is
A first light source comprising a first light emitting diode and irradiating the floor of the room with light emitted by the first light emitting diode;
A second light source comprising a second light emitting diode and irradiating the wall surface of the room with light emitted by the second light emitting diode;
It is characterized by having.

  According to the lighting apparatus according to the present invention, for example, the first light source irradiates the floor surface of the room and the second light source irradiates the wall surface of the room. There is an effect that a person inside can feel that the whole room is bright.

Embodiment 1 FIG.
The first embodiment will be described with reference to FIGS.
FIG. 1 is a perspective view showing the external appearance of a lighting fixture 100 in this embodiment.
In addition, this figure has shown the place looked up from diagonally downward direction.

The main body 110 of the luminaire 100 has a substantially rectangular parallelepiped shape.
The first light source 120 is located at the bottom center of the main body 110. The first light source 120 includes a first light emitting diode 121 and a reflection plate 122.
The first light emitting diode 121 is a white diode element that emits light when energized. Note that the first light emitting diode 121 may be a light emitting diode element of another color, or may be an aggregate of a plurality of light emitting diodes. The first light emitting diode 121 irradiates the front direction of the main body 110.
The reflector 122 reflects the light emitted from the first light emitting diode 121 and collects it in the front direction of the main body 110. The reflection plate 122 has a shape obtained by scraping the bottom surface of the main body 110 into a spheroid shape, a paraboloid shape, or a rotation hyperboloid shape, and the inside is formed in a mirror shape.
Thereby, the first light source 120 irradiates the front direction of the main body 110 with the light emitted from the first light emitting diode 121.
For example, when the luminaire 100 is installed on or near the ceiling of the room, the first light source 120 irradiates the floor of the room.

The luminaire 100 has four second light sources 130.
The second light source 130 is located on each of the four sides surrounding the bottom surface of the main body 110. The second light source 130 includes a second light emitting diode 131 and a reflecting plate 132.
The second light emitting diode 131 is a white diode element that emits light when energized. Note that the second light emitting diode 131 may be a light emitting diode element of another color or an aggregate of a plurality of light emitting diodes, like the first light emitting diode 121.
The second light emitting diode 131 irradiates a direction of approximately 45 degrees with respect to the front direction of the main body 110 (that is, the direction in which the first light source 120 irradiates). Note that the direction in which the second light emitting diode 131 irradiates does not have to be 45 degrees as long as the direction has an acute angle with respect to the direction in which the first light source 120 irradiates.
The reflector 132 reflects the light emitted by the second light emitting diode 131 and collects it in a direction of approximately 45 degrees with respect to the front direction of the main body 110. The reflecting plate 132 has a shape in which four sides surrounding the bottom surface of the main body 110 are cut into a spheroidal shape, a rotating paraboloid shape, or a rotating hyperboloid shape, and the inside is formed in a mirror shape.
Accordingly, the second light source 130 emits a direction having an acute angle with respect to the direction emitted by the first light source 120 by the light emitted from the second light emitting diode 131.
For example, when the luminaire 100 is installed on or near the ceiling of the room, the second light source 130 irradiates the wall surface of the room.
Further, the number of the second light sources 130 may not be four. For example, if one of the four directions of the room is a window, the second light source 130 that irradiates that direction may not be provided. In addition, the number of second light sources 130 and the irradiation direction may be changed in accordance with the shape of the room.

  In addition, the lighting fixture 100 controls a power supply circuit for supplying power to the first light-emitting diode 121 and the second light-emitting diode 131 and lighting / extinguishing of the first light-emitting diode 121 and the second light-emitting diode 131. However, description thereof is omitted here.

Next, the usage example of the lighting fixture 100 in this embodiment is demonstrated.
FIG. 2 is a perspective view showing a use situation of the lighting fixture 100 in this embodiment.
This figure shows a portion illuminated by light emitted by the first light source 120.
In addition, this figure has shown the place looked up from diagonally downward direction like FIG. For convenience of explanation, the wall surface of the room 800 is omitted, and the floor surface 820 is drawn translucently.

  The lighting fixture 100 is used by being fixed to the ceiling 810 of the room 800 or near the ceiling 810. The luminaire 100 is fixed to the approximate center of the ceiling 810 in order to irradiate the center of the floor 820 from directly above.

When the luminance of the light source is equal, the illuminance of the irradiation target is inversely proportional to the square of the distance from the light source. Further, when the surface of the irradiation target is irradiated from the vertical direction, the illuminance of the irradiation target becomes the highest, and when irradiated from the oblique direction, the illuminance of the irradiation target decreases.
Therefore, when the lighting apparatus 100 is installed on the ceiling 810, if the light source irradiates the floor surface 820 from directly above, the distance from the floor surface 820 is the shortest and the light is irradiated from the direction perpendicular to the floor surface 820. Therefore, the illuminance on the floor 820 is the highest.

  Since the 1st light source 120 is located in the bottom face of the lighting fixture 100, and irradiates the front direction of the lighting fixture 100, it irradiates the floor surface 820 from right above. Therefore, even when the luminance of the first light emitting diode 121 is relatively low, the illuminance of the floor surface 820 can be set to a predetermined brightness.

  Although the 1st light source 120 irradiates the front direction of the lighting fixture 100, it irradiates not only the front direction completely but also the diagonal direction simultaneously. However, the larger the angle from the front direction, the weaker the light to be irradiated. The size of the irradiation range can be set to a desired range by changing the characteristics of the first light emitting diode 121 and the shape of the reflection plate 122.

  Since the luminaire 100 is used while being fixed at substantially the center of the ceiling 810 of the room 800, the first light source 120 illuminates the center of the floor 820 most brightly. Further, the light emitted in the oblique direction also illuminates the floor surface 820, and the light emitted from the first light source 120 can be utilized most effectively.

FIG. 3 is a perspective view showing a usage situation of the lighting fixture 100 in this embodiment.
This figure shows a portion illuminated by light emitted by the second light source 130.
In addition, this figure has shown the place looked up from diagonally downward direction like FIG. Further, for convenience of explanation, the floor surface 820 of the room 800 is omitted, the wall surface 830 is drawn translucently, and the lighting fixture 100 fixed to the ceiling 810 is seen through the wall surface 830.

The second light source 130 is located on four sides surrounding the bottom surface of the lighting fixture 100. The lighting fixture 100 is fixed so that the four sides surrounding the bottom surface are parallel to the wall surface 830.
The second light source 130 irradiates substantially the center of the wall surface 830. In addition, it is good also as a structure which can adjust the direction which the 2nd light source 130 irradiates so that the 2nd light source 130 may irradiate the approximate center of the wall surface 830 according to the shape of the room 800.
If it does so, the same lighting fixture 100 can be used irrespective of the shape of a room, and it is preferable.

  Since the lighting fixture 100 is used by being fixed to the ceiling 810 or near the ceiling 810, in order to irradiate the wall surface 830 from the vertical direction, it is necessary to irradiate the wall surface 830 having the same height as the lighting fixture 100. A dark part is formed below the wall surface 830. Therefore, in the lighting fixture 100 in this embodiment, the second light source 130 irradiates the approximate center of the wall surface 830, thereby minimizing the portion of the wall surface 830 that is not irradiated by the second light source 130.

  Since the luminaire 100 is fixed at the approximate center of the ceiling 810, when the second light source 130 irradiates the approximate center of the wall surface 830, the deviation from the vertical direction with respect to the wall surface 830 can be minimized. The illuminance of the wall surface 830 is increased.

Since the luminaire 100 is fixed at substantially the center of the ceiling 810, the distance from each second light source 130 to the wall surface 830 irradiated by the second light source 130 is substantially equal.
As described above, since the illuminance of the irradiation target is inversely proportional to the square of the distance from the light source, when the luminaire 100 is installed near one of the wall surfaces 830, the near wall surface 830 becomes brighter. The wall 830 on the far side becomes darker. When the brightness in the room 800 is considered as a whole, it is preferable that the lighting apparatus 100 is arranged in the center without being biased to one of the wall surfaces 830, because the whole becomes brighter.
However, for example, when there is no second light source 130 that irradiates the direction of the room 800, for example, the wall surface 830 is not provided on one side of the room 800, the lighting device 100 does not necessarily have to be installed at the approximate center of the room 800.

FIG. 4 is a perspective view showing a usage situation of the lighting fixture 100 in this embodiment.
This figure shows how the luminaire 100 illuminates the interior of the room 800 as a whole by combining the light emitted from the first light source 120 and the light emitted from the second light source 130.
In addition, this figure has shown the place looked up from diagonally downward direction like FIG.2 and FIG.3. Further, for convenience of explanation, the floor surface 820 and the wall surface 830 are drawn translucently, and the lighting fixture 100 fixed to the ceiling 810 is seen through the wall surface 830.
As described with reference to FIG. 2, the first light source 120 irradiates the floor surface 820. In addition, as described with reference to FIG. 3, the four second light sources 130 irradiate the four wall surfaces 830 on the four sides of the room 800, respectively. Thereby, the lighting fixture 100 irradiates all the floor surface 820 and the wall surface 830 of the room 800.

The person perceives the brightness in the room 800 due to the diffused light diffused by hitting the floor surface 820 or the wall surface 830. Therefore, by irradiating the floor surface 820 and the wall surface 830, a person in the room 800 feels that the room 800 is bright.
Therefore, according to the lighting fixture 100 in this embodiment, even if the brightness | luminance of the 1st light emitting diode 121 and the 2nd light emitting diode 131 is comparatively low, the brightness of the room 800 which a person feels is made into desired brightness. Therefore, the power consumed by the lighting apparatus 100 can be suppressed.
In addition, since the high output light emitting diode generates a large amount of heat, a lighting fixture using the high output light emitting diode needs to have a structure for heat dissipation, which increases the size of the lighting fixture and increases the manufacturing cost. According to the lighting fixture 100 in this embodiment, since a low-power light emitting diode can be used, the lighting fixture 100 can be reduced in size and weight, and the manufacturing cost can be reduced.

The first light source 120 and the second light source 130 may be configured to be turned on / off in synchronization, or may be configured to be turned on / off independently.
For example, when working on a desk, power consumption can be suppressed by turning on only the first light source 120 to illuminate the hand brightly and turning off the second light source 130. You can also create an atmosphere by illuminating the dining table.
Conversely, when there is no work on the desk, only the second light source 130 is turned on to ensure the brightness of the entire room, and the first light source 120 is turned off to reduce power consumption. it can.

  The lighting fixture 100 in this embodiment includes a first light emitting diode 121, a first light source 120 that irradiates the floor 820 of the room 800 with light emitted from the first light emitting diode 121, and a second light emitting diode. 131, and the second light source 130 that irradiates the wall surface 830 of the room 800 with the light emitted from the second light emitting diode 131.

  According to the lighting fixture 100 in this embodiment, since the first light source 120 that irradiates the floor surface 820 and the second light source 130 that irradiates the wall surface 830 are provided, the entire room 800 is illuminated in a balanced manner. Even if a low-power light emitting diode is used, there is an effect that a person in the room 800 can feel the whole room 800 bright.

  The lighting fixture 100 in this embodiment is characterized in that the first light source 120 irradiates the approximate center of the floor surface 820 and the second light source 130 irradiates the approximate center of the wall surface 830.

  According to the luminaire 100 in this embodiment, the first light source 120 irradiates substantially the center of the floor surface 820, so that the light emitted from the first light source 120 is efficiently used to be in the room 800. There is an effect that a person can feel that the entire room 800 is bright.

  According to the luminaire 100 in this embodiment, the second light source 130 irradiates substantially the center of the wall surface 830, so that the person in the room 800 can efficiently use the light emitted by the second light source 130. In addition, there is an effect that the entire room 800 can be felt bright.

  The lighting apparatus 100 in this embodiment is characterized in that the first light source 120 irradiates the floor surface 820 from directly above.

  According to the lighting apparatus 100 in this embodiment, since the first light source 120 irradiates the floor surface 820 from directly above, the illuminance of the floor surface 820 is increased, and the person in the room 800 can be informed to the entire room 800. The effect is that it can be felt bright.

  The lighting fixture 100 in this embodiment is characterized in that it is used by being fixed at a substantial center near the ceiling of the room 800.

  According to the luminaire 100 in this embodiment, since the luminaire 100 is used while being fixed substantially at the center of the room 800, the distances from the left and right (or front and rear) wall surfaces 830 are substantially equal, and the left and right (or front and rear) The sum of the illuminances of the wall surfaces 830 is increased, and the person in the room 800 can feel the entire room 800 bright.

  The lighting fixture 100 in this embodiment includes a first light emitting diode 121, and a first light source 120 that irradiates a substantially front direction of the main body 110 of the lighting fixture 100 by light emitted from the first light emitting diode 121; A second light emitting diode 131 is provided, and the light emitted from the second light emitting diode 131 has a direction having an acute angle with respect to the direction irradiated by the first light source 120 by the light emitted from the second light emitting diode 131. And a second light source 130 for irradiation.

  According to the luminaire 100 in this embodiment, the first light source 120 irradiates the substantially front direction of the main body 110. Therefore, when the luminaire 100 is fixed to the ceiling 810 or the vicinity of the ceiling 810, the floor surface 820 is secured. Irradiation is performed from above, and the illuminance of the floor 820 increases.

  According to the lighting fixture 100 in this embodiment, the second light source 130 emits a direction having an acute angle with the direction of the first light source 120, so that the lighting fixture 100 is placed on the ceiling 810 or in the vicinity of the ceiling 810. When it is fixed to the wall surface 830, the wall surface 830 is irradiated, and the entire room 800 can be illuminated.

  The luminaire 100 according to this embodiment has a plurality of second light sources 130, and the directions irradiated by the plurality of second light sources 130 are substantially perpendicular to each other.

  According to the luminaire 100 in this embodiment, the directions irradiated by the plurality of second light sources 130 are substantially perpendicular to each other. Therefore, when the luminaire 100 is fixed to a room 800 having a rectangular floor 820, Each of the second light sources 130 irradiates the wall surface 830, so that the entire room 800 can be illuminated.

Embodiment 2. FIG.
The second embodiment will be described with reference to FIGS.
FIG. 5 is a perspective view showing the external appearance of the lighting fixture 100 in this embodiment.
In addition, this figure has shown the place looked up from diagonally downward direction.

The lighting fixture 100 in this embodiment is different from the lighting fixture 100 described in the first embodiment in that it has a third light source 140.
Since the other points are the same as those described in the first embodiment, description thereof is omitted here.

The luminaire 100 has four third light sources 140.
The third light source 140 is located at each of the four vertices on the bottom surface of the main body 110. The third light source 140 includes a third light emitting diode 141 and a reflection plate 142.
The third light emitting diode 141 is a white diode element that emits light when energized. Note that the third light emitting diode 141 may be a light emitting diode element of another color or an aggregate of a plurality of light emitting diodes, like the first light emitting diode 121 and the second light emitting diode 131.
The 3rd light emitting diode 141 irradiates the substantially middle direction of the direction which the 2nd light source 130 on both sides irradiates. Note that the direction of irradiation of the third light emitting diode 141 may be an approximately middle direction of the direction of irradiation of the three light sources including the first light source 120, or the first light source 120 may irradiate. It is good also as irradiating the substantially middle direction of the direction to perform and the direction which one of the 2nd light sources 130 irradiates.
The reflection plate 142 reflects the light emitted from the third light emitting diode 141 and collects it in a substantially intermediate direction of the direction irradiated by the second light source 130 on both sides. The reflector 142 has a shape in which the vertex of the bottom surface of the main body 110 is cut into a spheroid, a paraboloid, or a hyperboloid, and the inside is formed into a mirror surface.
As a result, the third light source 140 irradiates the substantially middle direction of the direction irradiated by the second light source 130 adjacent to each other with the light emitted from the third light emitting diode 141.
For example, when the lighting apparatus 100 is installed on the ceiling of the room or near the ceiling, the third light source 140 irradiates the vicinity of the boundary between the wall surfaces of the room (the corners of the room).
Further, the number of the third light sources 140 may not be four. For example, when one of the four corners of the room is a window, the third light source 140 that irradiates the direction may not be provided. In addition, the number of the third light sources 140 and the irradiation direction may be changed according to the shape of the room.

Next, the usage example of the lighting fixture 100 in this embodiment is demonstrated.
FIG. 6 is a perspective view showing a use situation of the lighting fixture 100 in this embodiment.
This figure shows a portion illuminated by light emitted by the third light source 140.
In addition, this figure has shown the place looked up from diagonally downward direction like FIG. Further, for convenience of explanation, the floor surface 820 and the wall surface 830 of the room 800 are drawn translucently, and the luminaire 100 fixed to the ceiling 810 is seen through the wall surface 830.

The luminaire 100 is used by being fixed to the ceiling 810 of the room 800 or substantially the center near the ceiling 810.
The third light source 140 irradiates a substantially intermediate direction of the direction irradiated by the adjacent second light source 130. Since the second light sources 130 each irradiate the wall surface 830 of the room 800, the third light source 140 irradiates the boundary portion between the two wall surfaces 830. In addition, since each of the second light sources 130 irradiates substantially the center of the wall surface 830, the third light source 140 irradiates near the boundary between the wall surface 830 and the floor surface 820 (the corner of the room 800).

FIG. 7 is a perspective view showing a usage state of the lighting fixture 100 in this embodiment.
In this figure, the light that the first light source 120 irradiates, the light that the second light source 130 irradiates, and the light that the third light source 140 irradiates, and the lighting fixture 100 as a whole moves inside the room 800. It shows how to shine.
In addition, this figure has shown the place looked up from diagonally downward direction like FIG. Further, for convenience of explanation, the floor surface 820 and the wall surface 830 are drawn translucently, and the lighting fixture 100 fixed to the ceiling 810 is seen through the wall surface 830.

  Since the lighting fixture 100 described in Embodiment 1 does not include the third light source 140, the corner portion of the room 800 is not irradiated (see FIG. 4). On the other hand, in the lighting apparatus 100 in this embodiment, since the third light source 140 irradiates a corner portion of the room 800, a dark portion does not exist, and a person in the room 800 I feel 800 is brighter.

  Note that the lighting device 100 may be fixed to a position suspended from the ceiling 810 of the room 800, and a fourth light source that irradiates the four corners on the ceiling 810 side of the upper surface of the wall surface 830 may be provided.

  The lighting fixture 100 in this embodiment includes a third light emitting diode 141, and has a third light source 140 that irradiates a boundary portion between the floor surface 820 and the wall surface 830 with light emitted from the third light emitting diode 141. It is characterized by.

  According to the lighting apparatus 100 in this embodiment, since the third light source 140 irradiates the boundary portion between the floor surface 820 and the wall surface 830, there are few places with low illuminance in the room 800, and the room 800 The effect is that the person who is in the room can feel the entire room 800 bright.

  The lighting fixture 100 in this embodiment further includes a third light emitting diode 141, and the direction in which the first light source 120 irradiates the light emitted from the third light emitting diode 141 and the direction in which the second light source 130 irradiates. It has the 3rd light source 140 which irradiates the substantially middle direction.

  According to the lighting fixture 100 in this embodiment, the third light source 140 irradiates the direction that is just a valley between the light emitted by the first light source 120 and the light emitted by the second light source 130. The dark part of the room 800 is reduced, and the person in the room 800 can feel the whole room 800 brighter.

  The lighting fixture 100 in this embodiment includes a plurality of second light sources 130, and further includes a third light emitting diode 141, and among the plurality of second light sources 130 by light emitted from the third light emitting diode 141. And a third light source 140 that irradiates a substantially intermediate direction between a direction in which one of the second light sources 130 irradiates and a direction in which another one of the plurality of second light sources 130 irradiates.

  According to the lighting fixture 100 in this embodiment, since the third light source 140 irradiates the direction that is just a valley of the light emitted from the plurality of second light sources 130, there are few dark portions in the room 800. Thus, there is an effect that a person in the room 800 can make the whole room 800 feel brighter.

Embodiment 3 FIG.
A third embodiment will be described with reference to FIGS.
FIG. 8 is a diagram showing an appearance of the lighting apparatus 100 in this embodiment.
FIG. 8A is a front view, and FIG. 8B is a bottom view.

  The lighting apparatus 100 in this embodiment is used by embedding the main body 110 in the ceiling of the room, and only the decorative cover 160 is visible from the inside of the room. The exhaust port 112 is connected to the outside or an exhaust duct and has a function as a ventilation fan.

The decorative cover 160 has a quadrangular pyramid shape, and includes translucent covers 161 and 162, an air inlet 163, and the like.
The translucent cover 161 is a transparent cover formed of, for example, plastic, and has the first light source 120 inside. The light emitted by the first light source 120 passes through the translucent cover 161 and irradiates the interior of the room. In this example, there are two translucent covers 161 near the vertex of the bottom surface of the decorative cover 160 and at positions that are point-symmetric with respect to the center.
The translucent cover 162 is a transparent cover formed of plastic or the like, like the translucent cover 161, and has the second light source 130 inside. The light emitted by the second light source 130 passes through the translucent cover 162 and irradiates the interior of the room. In this example, there are four translucent covers 162 at the center of the four side surfaces of the decorative cover 160.
The air inlet 163 is an opening for sucking air inside the room. In this example, the intake ports 163 have a long and narrow rectangular shape and are formed side by side.
Air sucked from the intake port 163 passes through the casing 111 of the main body 110 and is discharged from the exhaust port 112.

9 and 10 are diagrams showing the internal structure of the lighting fixture 100 in this embodiment.
9A is a sectional view taken along line AA in FIG. 8B, FIG. 9B is a sectional view taken along line BB in FIG. 8B, and FIG. 10 is a bottom view with the decorative cover 160 removed. It is.

Inside the decorative cover 160 is a heat sink 170. The heat radiating plate 170 is made of a material having high thermal conductivity such as iron.
The heat sink 170 has a shape obtained by bending a thin plate. In the center, there is a relatively wide rectangular part (heat dissipating part 171). The heat radiating portion 171 has eight oval openings (heat radiating ports 172).
When the air sucked from the air inlet 163 by the lighting fixture 100 passes through the heat radiating port 172, heat is taken from the heat radiating plate 170, and the heat radiating plate 170 efficiently radiates heat.
The heat radiating plate 170 has a second substrate mounting portion 174 extending like an arm from the vicinity of the center of each side of the rectangular heat radiating portion 171. In this example, there are four second board mounting portions 174. The second substrate mounting portion 174 has a tip bent at an acute angle in a “<” shape, and the mounting substrate 133 is mounted on the outside thereof. A second light emitting diode 131 (second light source 130) is attached to the attachment substrate 133.
Moreover, the heat sink 170 has the 1st board | substrate attachment part 173 extended in the arm shape on the long side near 2 vertex on the diagonal of the heat sink 171. FIG. In this example, there are two first substrate mounting portions 173. The first substrate mounting portion 173 has a distal end bent in a “U” shape, and the mounting substrate 123 is mounted outside the distal end. A first light emitting diode 121 (first light source 120) is attached to the attachment substrate 123.

  The decorative cover 160 has a reflecting plate 122 inside the translucent cover 161 and has a reflecting plate 132 inside the translucent cover 162. The reflector 122 and the reflector 132 are perforated, and when the decorative cover 160 is attached, the first light-emitting diode 121 and the second light-emitting diode 131 are fitted into the holes, respectively. Light source 120 and second light source 130.

The first light source 120 irradiates the front direction. As described above, since the luminaire 100 is used by being embedded in the ceiling, the first light source 120 irradiates the direction directly below and irradiates the floor surface from a direction perpendicular to the floor surface.
The second light source 130 irradiates a direction having an acute angle with respect to the direction irradiated by the first light source 120. The second light source 130 is adjusted to an angle that irradiates substantially the center of the wall surface when the lighting apparatus 100 is embedded in the ceiling.

  The lighting fixture 100 is preferably used by being embedded in the approximate center of the ceiling. In the situation where the lighting apparatus 100 is used, the range irradiated by the first light source 120 and the second light source 130 is the same as the irradiation range described with reference to FIGS. Therefore, explanation is omitted here.

  The luminaire 100 includes a blower 180 (fan 181 and motor 182). The fan 181 is attached to the motor 182, and the fan 181 is rotated by supplying a DC voltage to the motor 182 and driving it. When the fan 181 rotates, an air flow toward the C direction is generated. As a result, the lighting apparatus 100 sucks indoor air from the air inlet 163 and discharges it from the air outlet 112. The air sucked from the air inlet 163 takes heat from the heat radiating plate 170, so that heat generated from the first light emitting diode 121 and the second light emitting diode 131 is efficiently radiated.

  The lighting fixture 100 includes a control device 150. The control device 150 supplies power to the first light source 120, the second light source 130, the motor 182, and the like, and controls turning on and off of the first light source 120 and the second light source 130 and the rotation of the motor 182. Note that wirings and signal lines for supplying power to the control device 150 and the like are omitted.

FIG. 11 is a configuration diagram showing a circuit configuration of the lighting fixture 100 in this embodiment.
The control device 150 includes a control circuit 151, an AC / DC conversion circuit 152, and DC / DC conversion circuits 153 to 155.

  The AC / DC converter circuit 152 (AC-DC converter) receives an AC voltage from an AC power source 200 such as a commercial power source (for example, 100 V or 200 V, 50 Hz or 60 Hz), and converts it into a DC voltage (for example, 141 V or 283 V). Output. The AC / DC conversion circuit 152 is constituted by, for example, a full-wave rectifier circuit using a diode bridge and a capacitor.

  The control circuit 151 receives the DC voltage output from the AC / DC conversion circuit 152 as drive power, and generates a control signal for controlling the DC / DC conversion circuits 153 to 155. Of the control signals generated by the control circuit 151, the signal for the DC / DC conversion circuit 153 is the first light source control signal, the signal for the DC / DC conversion circuit 154 is the second light source control signal, and the signal for the DC / DC conversion circuit 155 is the motor control signal. Call it.

The direct current direct current conversion circuits 153 to 155 (DC-DC converters) input the direct current voltage (for example, 141V or 283V) output from the alternating current direct current conversion circuit 152, step down the input direct current voltage, and direct current voltage (for example, 10V), and the generated DC voltage is output. The DC / DC conversion circuits 153 to 155 are, for example, chopper type step-down circuits configured by switching elements and LC low-pass filters. In this case, the switching element is repeatedly turned on and off by the control signal input from the control circuit 151. The voltage value of the output DC voltage is determined by the duty ratio during the period when the switching element is on. If the switching element is kept off, the output voltage becomes 0V.
The direct current voltage output from the direct current direct current conversion circuit 153 is supplied to the first light emitting diode 121 and turns on the first light emitting diode 121.
The direct current voltage output from the direct current direct current conversion circuit 154 is supplied to the second light emitting diode 131 to light the second light emitting diode 131.
The DC voltage output from the DC / DC conversion circuit 155 is supplied to the motor 182 to rotate the motor 182.
Note that the motor 182 may be an AC drive type motor, and an inverter circuit may be provided instead of the DC / DC conversion circuit 155.

For example, the control circuit 151 is an oscillation circuit that generates a rectangular wave having a predetermined duty ratio.
When a switch (not shown) provided between the AC power supply 200 and the lighting fixture 100 is turned on and power is supplied from the AC power supply 200 to the lighting fixture 100, the AC / DC conversion circuit 152 generates a DC voltage. To the control circuit 151. The control circuit 151 generates a rectangular wave having a duty ratio designed to generate a desired DC voltage as the first light source control signal, the second light source control signal, and the motor control signal. The DC / DC conversion circuits 153 to 155 generate a DC voltage based on the control signal input from the control circuit 151 and supply the DC voltage to the first light emitting diode 121, the second light emitting diode 131, and the motor 182. Thereby, the 1st light emitting diode 121 and the 2nd light emitting diode 131 light, and the motor 182 rotates.

In addition, the control circuit 151 may include a microcomputer and a storage device such as a ROM that stores a program executed by the microcomputer.
For example, the control circuit 151 determines that the microcomputer determines the voltage value of the DC voltage input from the AC / DC conversion circuit 152, and the DC voltage output from the DC / DC conversion circuits 153 to 155 becomes a desired voltage. The duty ratio of the first light source control signal, the second light source control signal, and the motor control signal output to the DC conversion circuits 153 to 155 may be changed.
If it does so, the same lighting fixture 100 can be used also in the environment where the voltage of AC power supply 200 differs, and it is preferable.

  The lighting apparatus 100 according to this embodiment sucks indoor air from the air inlet 163 and generates a flow of air that exhausts the sucked air from the air outlet 112, and a path of the air flow generated by the fan 180. And a heat radiating plate 170 to which at least one of the first light emitting diode 121 (first light source 120) and the second light emitting diode 131 (second light source 130) is attached.

  According to the lighting fixture 100 in this embodiment, the heat radiating plate 170 efficiently radiates heat due to the air flow generated by the air blowing unit 180, and the temperature rise due to heat generation of the first light emitting diode 121 and the second light emitting diode 131 is increased. There is an effect that it can be suppressed.

  The lighting apparatus 100 in this embodiment includes an air inlet 163, an air outlet 112, and a blower unit 180 that generates indoor air from the air inlet 163 and generates an airflow that exhausts the air that has been sucked in from the air outlet 112. It is characterized by having.

  According to the lighting fixture 100 in this embodiment, the air blowing unit 180 that generates an air flow that dissipates heat from the heat radiating plate 170 also serves as a ventilation fan for the room in which the lighting fixture 100 is installed. Compared to the case of installation, the installation cost is reduced, the installation space is small, and the power consumption can be suppressed.

  The lighting fixture 100 in this embodiment is characterized in that the heat radiating plate 170 includes a heat radiating portion 171 having a heat radiating port 172.

  According to the lighting fixture 100 in this embodiment, since the airflow that dissipates the heat radiating plate 170 passes through the heat radiating port 172, the heat radiating plate 170 effectively radiates heat.

  The luminaire 100 in this embodiment receives an AC voltage from an AC power source 200, converts it into a DC voltage, outputs an AC / DC conversion circuit 152 that outputs the converted DC voltage, and a DC output from the AC / DC conversion circuit 152. DC voltage conversion circuits 153 to 155 for inputting a voltage, converting the input DC voltage to a DC voltage having a voltage different from the input DC voltage, and outputting the converted DC voltage, The DC voltage output from 155 is supplied to at least one of the first light-emitting diode 121, the second light-emitting diode 131, and the motor 182.

  According to the lighting fixture 100 in this embodiment, the voltage value of the DC voltage output from the DC / DC conversion circuits 153 to 155 can be made constant even when AC voltages having different effective voltage values are input. Therefore, the same lighting device 100 can be used even in an environment where the voltage value of the AC power supply 200 is different.

  The lighting fixture 100 in this embodiment further receives the DC voltage output from the AC / DC conversion circuit 152, determines the voltage value of the input DC voltage, and based on the determined voltage value, the DC / DC conversion circuit 153. It has the control circuit 151 which outputs the control signal which controls -155.

  According to the lighting fixture 100 in this embodiment, the control circuit 151 determines the voltage value of the DC voltage output from the AC / DC conversion circuit 152 and changes the control signal for controlling the DC / DC conversion circuits 153 to 155. The voltage value of the DC voltage supplied to the first light-emitting diode 121, the second light-emitting diode 131, and the motor 182 is always constant even when the AC voltage of the AC power supply 200 input by the lighting fixture 100 is different. There is an effect that can be made.

  In the lighting fixture 100 in this embodiment, the DC / DC conversion circuits 153 to 155 have a series circuit in which a switching element, an inductor element, and a capacitor element are connected in series, and an input DC voltage is applied to the series circuit. The switching element is controlled by the input control signal, and the voltage across the capacitor element is output.

  According to the lighting fixture 100 in this embodiment, the voltage ratio between the input DC voltage and the output DC voltage can be easily changed by changing the duty ratio of the control signal for controlling the switching element. There is an effect that can be.

  In the lighting apparatus 100 according to this embodiment, the control circuit 151 receives the DC voltage output from the AC / DC conversion circuit 152, determines the voltage value of the input DC voltage, and has a duty ratio proportional to the voltage value. A control signal is output.

  According to the lighting fixture 100 in this embodiment, the DC voltage supplied to the first light-emitting diode 121, the second light-emitting diode 131, and the motor 182 regardless of the effective voltage value of the AC voltage input by the lighting fixture 100. There is an effect that the voltage value of is constant.

  In the lighting fixture 100 in this embodiment, the control circuit 151 steps down the DC voltage output from the AC / DC conversion circuit 152 and outputs a DC voltage having a voltage value proportional to the voltage value of the DC voltage. And a microcomputer that receives a DC voltage output from the step-down circuit, determines a voltage value of the input voltage, and outputs a control signal having a duty ratio proportional to the determined voltage value.

  According to the lighting fixture 100 in this embodiment, the microcomputer inputs a DC voltage having a voltage value proportional to the voltage value of the DC voltage output from the AC / DC conversion circuit 152, and is proportional to the voltage value of the input DC voltage. Therefore, the DC voltage supplied to the first light emitting diode 121, the second light emitting diode 131, and the motor 182 regardless of the effective voltage value of the AC voltage input by the lighting fixture 100 is output. There is an effect that the voltage value of is constant.

Embodiment 4 FIG.
The fourth embodiment will be described with reference to FIGS.
FIG. 12 is a diagram showing an external appearance of the lighting fixture 100 in this embodiment.
FIG. 12A is a front view, and FIG. 12B is a bottom view.

The lighting fixture 100 of this embodiment has a human sensor 191 and an illuminance sensor 192 (and a translucent cover 161 covering it) as compared with the lighting fixture 100 described in the third embodiment. The point is different in appearance.
Since other points are the same as those of the lighting fixture 100 described in the third embodiment, the description thereof is omitted here.

  The decorative cover 160 has translucent covers 161 at the four corners of the bottom surface. Among them, the first light source 120 is inside the two translucent covers 161 that are symmetrical with respect to the center of the decorative cover 160. In addition, a human sensor 191 is provided inside the other one light-transmitting cover 161, and an illuminance sensor 192 is provided inside the remaining one light-transmitting cover 161.

FIG. 13 is a configuration diagram showing a circuit configuration of the lighting fixture 100 in this embodiment.
The lighting fixture 100 in this embodiment is different from the lighting fixture 100 described in the third embodiment in that the circuit configuration includes a timer 156, a human sensor 191 and an illuminance sensor 192.
Since other points are the same as those of the lighting fixture 100 described in the third embodiment, the description thereof is omitted here.

The human sensor 191 detects whether or not a person is present at a place (for example, in a room) where the lighting apparatus 100 is installed, and outputs a detection signal indicating the presence or absence of the person.
The detection signal is, for example, a high potential when a person is present and a low potential when a person is not present, and indicates the presence or absence of a person depending on the level of the potential. Alternatively, it may be a constant potential when no person is present, and a potential that varies when a person is present, and the change in the potential may indicate the absence or presence of a person.
The human sensor 191 is configured using, for example, a pyroelectric element or an infrared sensor.
A detection signal output from the human sensor 191 is input to the control circuit 151.

The illuminance sensor 192 detects the brightness of a place (for example, in a room) where the luminaire 100 is installed, and outputs an illuminance signal indicating the detected brightness.
For example, the illuminance signal has a potential that increases in proportion to the brightness in the room, and indicates the brightness in the room by the potential.
The illuminance sensor 192 is configured by, for example, a photodiode or a phototransistor.
The illuminance signal output from the illuminance sensor 192 is input to the control circuit 151.

The timer 156 measures an elapsed time from the measurement start time, and outputs an elapsed time signal indicating the measured elapsed time.
The elapsed time signal is, for example, a parallel signal or a serial signal indicating a numerical value by an 8-bit or 16-bit binary number (indicating “1” and “0” depending on the potential level).
The timer 156, for example, receives a clock signal (for example, 4 MHz) of a microcomputer constituting the control circuit 151, divides the input clock signal, and outputs a divided signal (for example, 1 Hz). The circuit includes a counter circuit that inputs a signal output from the frequency dividing circuit, counts up the stored elapsed time, and outputs the stored elapsed time.
The timer 156 inputs a timer control signal. The input timer control signal is input to the reset terminal of the counter circuit, for example, and the elapsed time stored in the counter circuit is reset. Thereby, the elapsed time from the measurement start time is measured with the time when the timer control signal is input as the measurement start time.
Note that the frequency dividing circuit may input a signal (for example, a zero cross signal) generated from an AC voltage input from an AC power source (for example, 50 Hz or 60 Hz) instead of the microcomputer clock signal.
The timer control signal input by the timer 156 is output by the control circuit 151. The elapsed time signal output from the timer 156 is input to the control circuit 151.

Next, operation | movement of the lighting fixture 100 is demonstrated.
FIGS. 14, 15, and 16 are flowcharts showing the flow of illumination control processing by the control device 150 in this embodiment.
The illumination control process is a process in which the control device 150 controls the operations of the first light source 120, the second light source 130, and the fan 181.
The control circuit 151 of the control device 150 is configured using a microcomputer, and the processing described here is realized by the microcomputer executing a program stored in a storage device such as a ROM.
However, all or part of these processes may be executed by a digital circuit such as a logic circuit or an analog circuit. For example, the control signal that the control circuit 151 outputs to the DC / DC conversion circuits 153 to 155, such as the first light source control signal, is a rectangular wave having a certain duty ratio, but these control signals are directly output from the microcomputer. The microcomputer may manage a period in which the control signal is at a high potential and a period in which the control signal is at a low potential. Alternatively, a configuration may be adopted in which a signal indicating the duty ratio of the control signal is output from the microcomputer, and the logic circuit to which the signal is input outputs a control signal having the duty ratio indicated by the signal.

In step S <b> 501, the control circuit 151 receives the detection signal output from the human sensor 191.
In S502, the control circuit 151 determines whether there is a person in the room based on the detection signal input in S501.
If it is determined that there is a person in the room, the process proceeds to S503.
If it is determined that there is no person in the room, the process returns to S501.

  In step S503, the control circuit 151 starts outputting a motor control signal. The DC / DC conversion circuit 155 receives the motor control signal output from the control circuit 151 and starts supplying power to the motor 182. As a result, the motor 182 is driven and the fan 181 rotates.

In step S504, the control circuit 151 inputs the illuminance signal output from the illuminance sensor 192.
In S505, the control circuit 151 determines whether the brightness in the room is darker than the predetermined brightness based on the illuminance signal input in S504. For example, the potential of the illuminance signal is compared with a predetermined potential, and if the potential of the illuminance signal is lower, it is determined that the room is dark.
If it is determined that the room is dark, the process proceeds to S511.
If it is determined that the room is bright, the process proceeds to S541.

In S511, the control circuit 151 starts outputting the first light source control signal. The DC / DC conversion circuit 153 receives the first light source control signal output from the control circuit 151 and starts supplying power to the first light emitting diode 121 (first light source 120). Thereby, the 1st light emitting diode 121 lights.
In S512, the control circuit 151 starts outputting the second light source control signal. The DC / DC conversion circuit 154 receives the second light source control signal output from the control circuit 151 and starts supplying power to the second light emitting diode 131 (second light source 130). Thereby, the second light emitting diode 131 is turned on.

  Note that only one of the first light-emitting diode 121 and the second light-emitting diode 131 may be turned on according to the brightness in the room. Alternatively, only a part of the two first light emitting diodes 121 and the four second light emitting diodes 131 may be turned on.

In S521, the control circuit 151 inputs the detection signal output from the human sensor 191.
In S522, the control circuit 151 determines whether there is a person in the room based on the detection signal input in S521.
If it is determined that there is a person in the room, the process returns to S521.
If it is determined that there is no person in the room, the process proceeds to S523.

  In S523, the control circuit 151 outputs a timer control signal. The timer 156 receives the timer control signal output from the control circuit 151 and resets the elapsed time. The timer 156 measures the elapsed time from the measurement start time using this time as the measurement start time.

In S524, the control circuit 151 receives the detection signal output from the human sensor 191.
In S525, the control circuit 151 determines whether there is a person in the room based on the detection signal input in S524.
If it is determined that there is a person in the room, the process returns to S521.
If it is determined that there is no person in the room, the process proceeds to S526.

In S526, the control circuit 151 inputs the elapsed time signal output from the timer 156.
In S527, the control circuit 151 determines whether 5 minutes have elapsed from the measurement start time (S523) based on the elapsed time signal input in S526.
If it is determined that 5 minutes have elapsed from the measurement start time, the process proceeds to S531.
If it is determined that 5 minutes have not elapsed since the measurement start time, the process returns to S524.

In S531, the control circuit 151 stops outputting the first light source control signal. The DC / DC conversion circuit 153 stops supplying power to the first light-emitting diode 121 (first light source 120). As a result, the first light emitting diode 121 is turned off.
In S532, the control circuit 151 stops outputting the second light source control signal. The DC / DC conversion circuit 154 stops the supply of power to the second light emitting diode 131 (second light source 130). As a result, the second light emitting diode 131 is turned off.
Thereafter, the process proceeds to S542.

  In S541, the control circuit 151 outputs a timer control signal. The timer 156 receives the timer control signal output from the control circuit 151 and resets the elapsed time. The timer 156 measures the elapsed time from the measurement start time using this time as the measurement start time.

In S542, the control circuit 151 inputs the detection signal output from the human sensor 191.
In S543, the control circuit 151 determines whether there is a person in the room based on the detection signal input in S542.
If it is determined that there is a person in the room, the process returns to S504.
If it is determined that there is no person in the room, the process proceeds to S544.

In S544, the control circuit 151 receives the elapsed time signal output from the timer 156.
In S545, the control circuit 151 determines whether 10 minutes have elapsed from the measurement start time (S523 or S541) based on the elapsed time signal input in S544.
If it is determined that 10 minutes have elapsed from the measurement start time, the process proceeds to S546.
If it is determined that 10 minutes have not elapsed since the measurement start time, the process returns to S542.

In S546, the control circuit 151 stops outputting the motor control signal. The DC / DC conversion circuit 155 stops the supply of power to the motor 182. As a result, the motor 182 stops and the fan 181 stops.
Thereafter, the process returns to S501.

Thereby, the lighting fixture 100 rotates the fan 181 and ventilates when a person is detected in the room. Further, when the room is dark, at least one of the first light source 120 and the second light source 130 is turned on.
After that, when no person is detected in the room, it waits for 5 minutes to pass, and in the meantime, when no person is detected in the room, the first light source 120 and the second light source 130 Turn off at least one of them. Further, after waiting for 5 minutes (10 minutes in total) to pass, if no person is detected in the room, the rotation of the fan 181 is also stopped.

  When the person is no longer detected in the room, the first light source 120 and the second light source 130 are not immediately turned off because the human sensor 191 does not turn off even though there is a person in the room. This is to prevent the first light source 120 and the second light source 130 from turning off when the presence of the light source is not detected. For example, when a person in the room does not move or when the person is outside the detection range of the human sensor 191, there is a possibility that the detection is lost. If no person is detected after waiting for 5 minutes, there is almost no possibility of detection failure, so the first light source 120 and the second light source 130 may be turned off.

In addition, waiting for another 5 minutes until the fan 181 is stopped is to cool the first light-emitting diode 121 and the second light-emitting diode 131 sufficiently in order to prevent the smell from burning in the room (ventilation fan function). Therefore, there are two purposes (heat dissipation function).
“5 minutes” and “10 minutes” are merely examples, and other elapsed times may be waited.

  Alternatively, the illuminance sensor 192 is not provided, and at least one of the first light source 120 and the second light source 130 may be turned on when the human sensor 191 detects the presence of a person.

  The lighting apparatus 100 in this embodiment detects the presence of a person in the room, outputs a detection signal indicating the presence / absence of the person, a human sensor 191, inputs the detection signal, and the input detection signal is The control device 150 supplies power to at least one of the first light source 120 and the second light source 130 when the presence of a person is indicated.

  According to the lighting apparatus 100 in this embodiment, the human sensor 191 detects the presence of a person in the room and automatically turns on at least one of the first light source 120 and the second light source 130. Therefore, there is an effect that it is not necessary to operate the power switch of the lighting apparatus 100 and it is not necessary to search for the power switch in a dark room.

  The lighting apparatus 100 in this embodiment waits until a predetermined time (5 minutes) elapses when the control device 150 indicates that the input detection signal indicates the absence of a person, and the input is performed during the predetermined time. When the detected signal does not indicate the presence of a person, the power supply to at least one of the first light source 120 and the second light source 130 is stopped.

  According to the lighting apparatus 100 in this embodiment, the human sensor 191 detects that there is no person in the room and automatically turns off at least one of the first light source 120 and the second light source 130. Therefore, there is no need to operate the power switch of the lighting fixture 100, and it is possible to prevent waste of power due to forgetting to turn off the switch.

  According to the lighting apparatus 100 in this embodiment, after waiting for a predetermined time to elapse after the human sensor 191 detects that there is no person in the room, the first light source 120 and the second light source 120 Since at least one of the light sources 130 is turned off, there is an effect that the light source 130 is not accidentally turned off due to a detection leak.

  The luminaire 100 in this embodiment further includes an illuminance sensor 192 that detects the brightness in the room and outputs an illuminance signal indicating the brightness in the room. When the illuminance signal is input and the input detection signal indicates the presence of a person, it is determined whether or not the brightness in the room indicated by the input illuminance signal is darker than the predetermined brightness. When it is determined that the brightness is darker than the predetermined brightness, power is supplied to at least one of the first light source 120 and the second light source 130.

  According to the lighting fixture 100 in this embodiment, when there is a person in the room and the room is dark, at least one of the first light source 120 and the second light source 130 is automatically turned on. Since it is lit, for example, in a room where outside light is inserted, during the daytime when the outside is bright, the first light source 120 and the second light source 130 are not lit, and there is an effect that wasteful power consumption can be suppressed.

  The lighting fixture 100 in this embodiment waits until a predetermined time elapses after the control device 150 turns off the first light source 120 and the second light source 130, and supplies electric power to the motor 182 (blower unit 180). The supply is stopped.

  According to the lighting fixture 100 in this embodiment, the fan 181 connected to the motor 182 continues to rotate for a predetermined time after the first light source 120 and the second light source 130 are turned off. One light emitting diode 121 and the second light emitting diode 131 can be sufficiently dissipated, and the temperature rise due to heat generation of the first light emitting diode 121 and the second light emitting diode 131 can be suppressed.

FIG. 3 is a perspective view illustrating an appearance of the lighting fixture 100 according to Embodiment 1. FIG. 3 is a perspective view illustrating a usage state of the lighting fixture 100 according to the first embodiment. FIG. 3 is a perspective view illustrating a usage state of the lighting fixture 100 according to the first embodiment. FIG. 3 is a perspective view illustrating a usage state of the lighting fixture 100 according to the first embodiment. FIG. 10 is a perspective view illustrating an appearance of a lighting fixture 100 according to Embodiment 2. FIG. 10 is a perspective view illustrating a usage state of the lighting fixture 100 according to Embodiment 2. FIG. 10 is a perspective view illustrating a usage state of the lighting fixture 100 according to Embodiment 2. FIG. 6 shows an external appearance of a lighting fixture 100 according to Embodiment 3. FIG. 6 shows an internal structure of a lighting fixture 100 according to Embodiment 3. FIG. 6 shows an internal structure of a lighting fixture 100 according to Embodiment 3. FIG. 6 is a configuration diagram illustrating a circuit configuration of a lighting fixture 100 according to Embodiment 3. FIG. 6 shows an external appearance of a lighting fixture 100 according to Embodiment 4. FIG. 6 is a configuration diagram illustrating a circuit configuration of a lighting fixture 100 according to Embodiment 4. FIG. 14 is a flowchart (part 1) illustrating a flow of illumination control processing by the control device 150 according to the fourth embodiment. FIG. 14 is a flowchart (part 2) illustrating a flow of illumination control processing by the control device 150 according to the fourth embodiment. FIG. 9 is a flowchart (part 3) illustrating the flow of illumination control processing by the control device 150 according to the fourth embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Lighting fixture, 110 Main body, 111 Caging, 112 Exhaust port, 120 First light source, 121 First light emitting diode, 122, 132, 142 Reflector, 123, 133 Mounting board, 130 Second light source, 131 Second Light emitting diode, 140 third light source, 141 third light emitting diode, 150 control device, 151 control circuit, 152 AC to DC conversion circuit, 153 to 155 DC to DC conversion circuit, 156 timer, 160 decorative cover, 161, 162 through Light Cover, 163 Air Intake, 170 Heat Dissipation Plate, 171 Heat Dissipation Portion, 172 Heat Dissipation Port, 173 First Board Mounting Portion, 174 Second Board Mounting Portion, 180 Blowing Portion, 181 Fan, 182 Motor, 191 Human Sensor, 192 Illuminance sensor, 200 AC power supply, 800 rooms, 810 ceiling, 8 0 floor surface, 830 wall.

Claims (12)

A first light source comprising a first light emitting diode and irradiating the floor of the room with light emitted by the first light emitting diode;
A second light source comprising a second light emitting diode and irradiating the wall surface of the room with light emitted by the second light emitting diode;
The lighting fixture characterized by having. The first light source irradiates substantially the center of the floor surface,
The lighting apparatus according to claim 1, wherein the second light source irradiates a substantially center of the wall surface. The lighting apparatus further includes:
The lighting apparatus according to claim 1, further comprising: a third light source that includes a third light emitting diode, and irradiates a boundary portion between the floor surface and the wall surface by light emitted from the third light emitting diode. . The body,
A first light source comprising a first light emitting diode and irradiating a substantially front direction of the main body with light emitted by the first light emitting diode;
A second light source comprising a second light emitting diode, and irradiating a direction having an acute angle with respect to a direction irradiated by the first light source by light emitted from the second light emitting diode;
The lighting fixture characterized by having. The lighting fixture is
A plurality of the second light sources,
The lighting apparatus according to claim 4, wherein directions in which the plurality of second light sources irradiate are substantially perpendicular to each other. The lighting apparatus further includes:
A third light source including a third light emitting diode, and irradiating a substantially intermediate direction between a direction irradiated by the first light source and a direction irradiated by the second light source by light emitted from the third light emitting diode; The lighting fixture according to claim 4, wherein the lighting fixture is provided. The lighting fixture is
A plurality of the second light sources, and
A third light-emitting diode is provided, and light emitted from the third light-emitting diode is irradiated by one of the plurality of second light sources and the other one of the plurality of second light sources. The lighting apparatus according to claim 4, further comprising a third light source that irradiates a direction substantially in the middle of the direction. The lighting apparatus further includes:
A human sensor that detects the presence of a person in the room and outputs a detection signal indicating the absence or presence of the person;
A control device that inputs the detection signal and supplies power to at least one of the first light source and the second light source when the input detection signal indicates the presence of the person;
The lighting fixture according to any one of claims 1 to 7, characterized by comprising: The control device
If the input detection signal indicates the absence of the person, wait until a predetermined time elapses, and if the input detection signal does not indicate the presence of the person during the predetermined time, The lighting apparatus according to claim 8, wherein supply of electric power to at least one of the first light source and the second light source is stopped. The lighting apparatus further includes:
An illuminance sensor that detects the brightness in the room and outputs an illuminance signal indicating the brightness in the room,
The control device
When the detection signal and the illuminance signal are input and the input detection signal indicates the presence of the person, whether the brightness of the room indicated by the input illuminance signal is darker than a predetermined brightness When the brightness of the room is determined to be darker than a predetermined brightness, power is supplied to at least one of the first light source and the second light source. The lighting fixture of Claim 8 or Claim 9 to do. The lighting apparatus further includes:
The air inlet,
An exhaust port;
A blower unit that sucks indoor air from the intake port and generates an air flow that exhausts the intake air from the exhaust port;
Located on the path of the airflow generated by the air blowing unit, a heat radiating plate to which at least one of the first light source and the second light source is attached,
The lighting apparatus according to claim 1, comprising: The lighting apparatus further includes:
The air inlet,
An exhaust port;
A blower unit that sucks indoor air from the intake port and generates an air flow that exhausts the intake air from the exhaust port;
Located on the path of the airflow generated by the air blowing unit, a heat radiating plate to which at least one of the first light source and the second light source is attached,
After supplying electric power to at least one of the first light source and the second light source and the air blowing unit, and after stopping supply of electric power to at least one of the first light source and the second light source A control device for stopping the supply of power to the blower when a predetermined time has elapsed;
The lighting fixture according to any one of claims 1 to 7, characterized by comprising:

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