JP2021082520A - Light source unit and lighting device - Google Patents

Abstract

To provide a light source unit which can control a light receiving range of a light receiving element, and to provide a lighting device.SOLUTION: A light source unit according to the invention includes: a support plate having a first surface and a second surface that is an opposite surface of the first surface and formed with a first opening; a light source module provided on the first surface side of the support plate; a case which is provided on the second surface side of the support plate and formed with a second opening located on a surface facing the support plate; and a light receiving part which is housed in the case and exposed from the case through the second opening.SELECTED DRAWING: Figure 6

Description

The present invention relates to a light source unit and a luminaire.

Patent Document 1 discloses a light source unit including a light source unit, a wireless communication unit that performs wireless communication, and a holder that holds the light source unit and the wireless communication unit. The wireless communication unit is provided with a storage case. The storage case includes a lid and a case body. Further, the wireless communication unit is equipped with a light receiving element that receives infrared light. The light receiving element can receive an infrared signal through the through hole of the lid.

Japanese Unexamined Patent Publication No. 2016-213166

In a light source unit as in Patent Document 1, if the light source unit and the light receiving element are arranged on the same plane, a wide light receiving range of the light receiving element is secured, and the light receiving performance may deteriorate due to the influence of external light or the like. In addition, in facilities such as offices, a large number of lighting fixtures may be installed in the vicinity of each other. At this time, if the directivity of the light receiving element is not controlled, there is a risk that an unintended lighting fixture may be dimmed or set.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain a light source unit and a lighting fixture capable of controlling the light receiving range of a light receiving element.

The light source unit according to the present invention has a first surface and a second surface which is a surface opposite to the first surface, a support plate having a first opening formed therein, and the first surface side of the support plate. A light source module provided in the above, a case provided on the second surface side of the support plate and having a second opening formed on the surface facing the support plate, and a case housed in the case by the second opening. A light receiving portion exposed from the case is provided.

In the light source unit according to the present invention, the light receiving range of the light receiving element can be controlled by the first opening and the second opening.

It is a perspective view of the lighting equipment which concerns on Embodiment 1. FIG. It is a figure explaining the circuit structure of the light receiving element unit which concerns on Embodiment 1. FIG. It is an exploded perspective view of the light receiving element unit which concerns on Embodiment 1. FIG. It is sectional drawing of the light receiving element unit which concerns on Embodiment 1. FIG. It is sectional drawing of the light receiving element unit which concerns on the modification of Embodiment 1. FIG. It is sectional drawing of the lighting equipment which concerns on Embodiment 1. FIG. It is a figure explaining the change of the light receiving range by the 1st opening and the 2nd opening. It is a figure explaining the change of the light receiving range due to the deviation of the center of the 1st opening and the 2nd opening. It is a figure which shows the state which the luminaire is installed on the wall. It is a figure which shows the light receiving range of a plurality of lighting fixtures.

The light source unit and the luminaire according to the embodiment of the present invention will be described with reference to the drawings. The same or corresponding components may be designated by the same reference numerals and the description may be omitted.

Embodiment 1.
FIG. 1 is a perspective view of the lighting fixture 1 according to the first embodiment. The lighting fixture 1 includes a light source unit 2 and a fixture main body 3 that holds the light source unit 2. The appliance body 3 is mounted on the ceiling, for example. The fixture body 3 and the light source unit 2 are removable. Therefore, the user can select and replace the light source units 2 having different color temperatures or brightnesses.

The light source unit 2 includes a light source described later and a lighting device 5 that controls electric power supplied to the light source. Further, the light source unit 2 includes a light receiving element unit 4. The light receiving element unit 4 receives the remote control signal and controls the lighting device 5. The remote control signal is an infrared signal. That is, the lighting device 5 controls the lighting state of the light source according to the signal received by the light receiving unit 11a.

The light source unit 2 includes a cover 6. The lighting device 5 and the light receiving element unit 4 are housed between the light source and the cover 6 and the fixture main body 3. The lighting device 5 or the light receiving element unit 4 may be mounted on the instrument main body 3.

FIG. 2 is a diagram illustrating a circuit configuration of the light receiving element unit 4 according to the first embodiment. The light receiving element unit 4 includes a light receiving element 11, a control circuit 15, a first control interface 16, and a second control interface 17. The light receiving element 11 receives an infrared signal by a light receiving unit described later. The light receiving element 11 can be composed of, for example, a photodiode or a phototransistor. The infrared signal is, for example, a signal from the infrared remote controller 30.

The control circuit 15 converts the infrared signal received by the light receiving element 11 into a control signal. The control signal is a signal for controlling the lighting device 5. The first control interface 16 is connected to the lighting device 5.

The infrared signal from the infrared remote controller 30 includes, for example, dimming rate information. The light receiving element 11 receives information on the designated dimming rate as an infrared signal from the infrared remote controller 30. The light receiving element 11 transmits the dimming rate to the control circuit 15. The control circuit 15 converts the dimming rate into a control signal and transmits it to the lighting device 5 via the first control interface 16. The lighting device 5 controls the electric power supplied to the light source according to the control signal. As a result, the brightness of the light source unit 2 can be changed to the specified dimming rate.

The information contained in the infrared signal from the infrared remote controller 30 is not limited to the dimming rate. The infrared signal may be a signal for turning on or off the light source. Further, the infrared signal may be a signal that specifies the color of the light emitted by the light source. The infrared signal may be a signal for setting an individual address. In this case, the control circuit 15 stores the individual address received by the light receiving element 11.

The second control interface 17 communicates with the external dimming controller 20. The dimming controller 20 controls dimming and the like of the lighting fixture 1 from the outside. The dimming controller 20 transmits a dimming signal including an individual address to the light receiving element unit 4. The light receiving element unit 4 receives the dimming signal by the second control interface 17. The control circuit 15 determines whether the stored individual address and the individual address included in the dimming signal match. When the individual addresses match, the control circuit 15 controls the lighting device 5 via the first control interface 16 in response to the dimming signal. If the individual addresses do not match, the control circuit 15 does not control the lighting device 5 in response to the dimming signal.

A lighting system may be configured by connecting a plurality of lighting fixtures 1 to one dimming controller 20. Even in such a lighting system, the specific lighting fixture 1 can be individually controlled by the above control. In addition, the lighting fixture 1 can be easily set.

Communication between the dimming controller 20 and the second control interface 17 is performed by wire or wirelessly. In the case of wire, the second control interface 17 includes a terminal block to which a signal line is connected and a signal circuit for processing a wire signal. In the case of radio, the second control interface 17 includes an antenna that receives the radio signal.

FIG. 3 is an exploded perspective view of the light receiving element unit 4 according to the first embodiment. The light receiving element unit 4 includes a light receiving element 11, a circuit board 12, and a case 9. The light receiving element 11 and the circuit board 12 are housed in the case 9. The light receiving element 11 is mounted on the circuit board 12.

Case 9 is, for example, a resin case. The case 9 has a case top 9a and a case bottom 9b. The upper surface side of the circuit board 12 is covered with the case top 9a, and the lower surface side of the circuit board 12 is covered with the case bottom 9b. The case bottom 9b holds the circuit board 12. A first opening 10 is formed in the case bottom 9b at a position corresponding to the light receiving element 11.

FIG. 4 is a cross-sectional view of the light receiving element unit 4 according to the first embodiment. The light receiving portion 11a of the light receiving element 11 is exposed from the case 9 by the first opening 10. The light receiving unit 11a is a portion of the light receiving element 11 that receives infrared rays. The light receiving portion 11a is provided inside the case 9 so as not to protrude from the first opening 10 to the outside of the case 9.

The first opening 10 has a shape corresponding to the light receiving portion 11a of the light receiving element 11. The shape of the first opening 10 may be the same as the shape of the light receiving portion 11a. Further, the first opening 10 may have the same size as the light receiving portion 11a.

The case 9 has a protrusion 14 around the first opening 10. The protruding portion 14 projects toward the inside of the case 9. The protruding portion 14 projects toward the light receiving element 11. The protrusion 14 is provided along the first opening 10. The protruding portion 14 may surround the light receiving portion 11a. The light receiving range of the light receiving element 11 can be controlled by such a protruding portion 14. In the example shown in FIG. 4, the light receiving range is wider than that in the case where the protruding portion protrudes toward the outside of the case 9.

Further, the protruding portion 14 can prevent a person or an object from easily touching the light receiving element 11. As a result, electric shock can be prevented. Further, the protruding portion 14 can prevent foreign matter from entering the space in which the circuit board 12 is housed from the first opening 10. Foreign matter is, for example, insects or dust.

FIG. 5 is a cross-sectional view of the light receiving element unit 204 according to the modified example of the first embodiment. In the light receiving element unit 204, the structure of the protruding portion 214 of the case 209 is different from that of the light receiving element unit 4. The case 209 has a protrusion 214 protruding outward from the case 209 around the first opening 10. The projecting portion 214 can control the light receiving range to be narrower than the light receiving range of the light receiving element 11 alone. Further, the light receiving range is narrower than that of the example of FIG.

In this way, the light receiving range of the light receiving element 11 can be adjusted by the protrusions 14 and 214. The shapes of the protrusions 14 and 214 are not limited to those shown in FIGS. 4 and 5. The shape of the protrusion can be changed according to the target light receiving range. For example, when it is desired to control the light receiving range in a specific direction, the protrusion may be provided only in the specific direction. Further, the protruding portion may not be provided. Also in this case, the light receiving range can be controlled to be narrower by the case 9 as compared with the light receiving range of the light receiving element 11 alone.

Further, the shape of the first opening 10 is not limited to that shown in FIGS. 4 and 5. The first opening 10 may expose the light receiving element 11 so that the light receiving element 11 can receive the infrared signal. Further, the shape or size of the first opening 10 may be changed according to the target light receiving range.

FIG. 6 is a cross-sectional view of the lighting fixture 1 according to the first embodiment. The light source unit 2 includes a support plate 7. The support plate 7 has a first surface 7a and a second surface 7b which is a surface opposite to the first surface 7a. The support plate 7 is, for example, a metal plate.

A light source module 13 is provided on the first surface 7a side of the support plate 7. The support plate 7 holds the light source module 13. The light source module 13 has a light source substrate 13a provided on the first surface 7a and a light source 13b mounted on the light source substrate 13a. The light source 13b is a light emitting element such as an LED. On the light source substrate 13a, a plurality of light sources 13b may be arranged in the longitudinal direction of the luminaire 1.

A light receiving element unit 4 is provided on the second surface 7b side of the support plate 7. The light receiving element unit 4 is held by the support plate 7 and is housed in the instrument main body 3. The light receiving portion 11a of the light receiving element 11 faces the second surface 7b of the support plate 7. The first opening 10 is formed on the surface of the case 9 facing the support plate 7.

A second opening 8 is formed in the support plate 7. The second opening 8 is formed in a portion of the support plate 7 where the light source module 13 is not provided. In the present embodiment, the light source module 13 is provided at the center of the support plate 7. The second opening 8 is formed in a portion of the support plate 7 outside the light source module 13.

The second opening 8 overlaps at least a part of the first opening 10 when viewed from a direction perpendicular to the first surface 7a. The second opening 8 is circular or oval. The second opening 8 may be a slit such as a rectangle. The light receiving element 11 receives an infrared signal through the first opening 10 and the second opening 8.

In the example of FIG. 6, the second opening 8 is deviated from the first opening 10 in the direction along the first surface 7a. Not limited to this, the second opening 8 may be provided directly below the first opening 10. Further, the second opening 8 may be circular or elliptical, and the center of the first opening 10 and the center of the second opening 8 may overlap in a plan view. In this case, a circular light receiving range is obtained around the second opening 8.

When the second opening 8 is a rectangular slit and the short side of the slit is shorter than the diameter of the first opening 10, the light receiving range may be narrower than when the second opening 8 is circular. Also in this case, if a sufficient length of the long side of the slit is secured, a light receiving range equivalent to that in the case where the second opening 8 is circular can be obtained.

That is, even if the shape of the second opening 8 is changed according to the structure of the light source unit 2 or the arrangement of the light receiving element unit 4, the light receiving range can be adjusted to the same as before the change. For example, depending on the size of the light source module 13, there is a possibility that the space for forming the circular second opening 8 cannot be secured in the support plate 7. Also in this case, the rectangular second opening 8 makes it possible to obtain a light receiving range equivalent to that in the case of the circular shape.

The cover 6 is provided on the first surface 7a side of the support plate 7. The cover 6 is fixed to the support plate 7 so as to cover the light source module 13. The cover 6 has a support portion 6a extending along the first surface 7a of the support plate 7. The support portion 6a closes the second opening 8. As a result, it is possible to prevent foreign matter from entering the space from the second opening 8 to the space on the second surface 7b side of the support plate 7.

The cover 6 is made of resin. The resin material forming the cover 6 transmits light from the light source module 13 and infrared rays from the infrared remote controller 30. As a result, the light receiving performance of the light receiving element unit 4 can be ensured. The second opening 8 may be closed not only by the support portion 6a but also by a part of the cover 6. Alternatively, the second opening 8 may be closed by the resin bonded to the cover 6.

Further, the light receiving element unit 4 is arranged apart from the second surface 7b on the second surface 7b side opposite to the first surface 7a to which the light source module 13 is fixed. The light receiving element unit 4 is held by, for example, a support plate 7 or a cover 6, and is fixed apart from the second surface 7b. As a result, the surface of the case 9 on which the first opening 10 is formed is arranged apart from the second surface 7b of the support plate 7.

The light receiving range of the light receiving element 11 depends on the distance between the first opening 10 and the second opening 8. By fixing the light receiving element unit 4 to the support plate 7, it is possible to suppress the variation in the distance between the first opening 10 and the second opening 8. Therefore, the light receiving range can be set accurately.

When the light source unit 2 does not have a space for mounting the light receiving element unit 4, the light receiving element unit 4 may be mounted on the instrument main body 3. Also in this case, the light receiving element unit 4 is mounted on the instrument main body 3 so that the first opening 10 and the second opening 8 are separated by a certain distance. The light source module 13 is fixed to the support plate 7. Therefore, the temperature of the support plate 7 may rise due to the influence of the heat of the light source 13b. By mounting the light receiving element unit 4 on the instrument main body 3, the light receiving element unit 4 can be made less susceptible to the heat from the light source 13b.

FIG. 7 is a diagram illustrating a change in the light receiving range due to the first opening 10 and the second opening 8. With reference to FIG. 7, the change in the light receiving range depending on the shape or arrangement of the first opening 10 and the second opening 8 will be further described. In FIG. 7, a case 209 will be used as an example for explanation. Further, it is assumed that the first opening 10 and the second opening 8 are circular. Further, it is assumed that the central axes of the first opening 10 and the second opening 8 are aligned.

Let the diameter of the first opening 10 be D1 and the diameter of the second opening 8 be D2. Further, the distance between the case 209 and the support plate 307 is H. The distance H is the distance between the lower end of the protrusion 214 and the second surface 307b of the support plate 307.

The light receiving range of the light receiving element 11 becomes wider as D1 and D2 are larger, and narrower as D1 and D2 are smaller. Further, D2 has a greater influence on the light receiving range than D1. Further, as described with reference to FIGS. 4 and 5, when the protruding portion 214 is provided on the outside of the case 209, the light receiving range becomes narrower than when the protruding portion 214 is not provided. Further, when the protruding portion 214 is provided inside, the influence on the light receiving range of the protruding portion 214 is small, but the light receiving range can be slightly narrowed as compared with the case where the protruding portion 214 is not provided.

The light receiving range can also be adjusted by the distance H. The light receiving range becomes wider as the distance H is shorter and narrower as the distance H is longer.

As described above, the light receiving range of the light receiving element 11 can be controlled by the size of D1 and D2, the shape of the protruding portion 214, and the distance H.

FIG. 8 is a diagram illustrating a change in the light receiving range due to a deviation between the centers of the first opening 10 and the second opening 8. With reference to FIG. 8, the change in the light receiving range due to the deviation of the centers of the first opening 10 and the second opening 8 will be further described. In FIG. 8, a case 209 will be used as an example for explanation. Further, it is assumed that the first opening 10 and the second opening 8 are circular. Further, it is assumed that the centers of the first opening 10 and the second opening 8 are deviated by a distance L in the direction along the first surface 7a.

The light receiving range in this case has different directivity on the left and right sides centering on the light receiving portion 11a. That is, the light receiving range can be made asymmetrical depending on the distance L. Therefore, the shape of the light receiving range can be adjusted in consideration of the environment in which the lighting fixture 1 is installed.

FIG. 9 is a diagram showing a state in which the lighting fixture 1 is installed on the wall 42. When the luminaire 1 is installed on the wall 42, the light source unit 2 is turned sideways. At this time, the light receiving element 11 is also turned sideways. That is, the light receiving range extends to the floor surface 43 side and the ceiling surface 41 side. In such a case, the distance L may be adjusted to set the light receiving range 50 of the light receiving element 11 so that the ceiling surface 41 side is narrow and the floor surface 43 side is wide. As a result, an effective light receiving range can be obtained in actual use.

FIG. 10 is a diagram showing light receiving ranges of a plurality of lighting fixtures 1a and 1b. The lighting system 100 includes a plurality of lighting fixtures 1a and 1b. In the lighting system 100 in which a plurality of lighting fixtures 1a and 1b are installed in this way, the light receiving range of the lighting fixture 1a may be set wider in a specific direction than in other directions. For example, the second opening 8 of the light source unit 2 included in the luminaire 1a may be displaced in a direction away from the other luminaire 1b adjacent to the first opening 10. As a result, the region where the light receiving ranges 50 of the adjacent lighting fixtures 1a and 1b overlap can be reduced. Therefore, unintended operation or setting can be prevented.

7 and 8 show an example in which at least a part of the second opening 8 overlaps with the first opening 10. Not limited to this, the second opening 8 does not have to overlap with the first opening 10 when viewed from the direction perpendicular to the first surface 7a. As a result, the light receiving range can be made largely asymmetric with respect to the light receiving portion 11a.

As described above, in the present embodiment, two openings are provided in the light receiving path of the light receiving element 11. The light receiving range of the light receiving element 11 can be adjusted to a target range by the two openings. Further, even when a plurality of lighting fixtures 1 are installed adjacent to each other, unintended operation or setting can be prevented.

Further, when the light source unit and the light receiving element are arranged on the same plane, a wide light receiving range of the light receiving element is secured, and the light receiving performance may be deteriorated due to the influence of external light. On the other hand, in the present embodiment, the light receiving element 11 is arranged on the second surface 7b side of the support plate 7 apart from the support plate 7. As a result, it is possible to suppress a decrease in the light receiving performance of the light receiving element 11 due to external light.

Further, in the present embodiment, the light receiving range can be easily adjusted by adjusting the position or shape of the second opening 8 formed in the support plate 7. Therefore, the light receiving range can be easily adjusted according to the structure or arrangement of the light receiving element unit 4 to be used. Further, when the light receiving element unit 4 is not used, the second opening 8 may not be provided. Therefore, it is not necessary to specially design or process the support plate 7, and it is possible to standardize the parts.

The technical features described in this embodiment may be used in combination as appropriate.

1, 1a, 1b Lighting equipment, 2 Light source unit, 3 Equipment body, 4 Light receiving element unit, 5 Lighting device, 6 Cover, 6a Support part, 7 Support plate, 7a 1st surface, 7b 2nd surface, 8 2nd opening , 9 case, 9a case top, 9b case bottom, 10 first opening, 11 light receiving element, 11a light receiving part, 12 circuit board, 13 light source module, 13a light source board, 13b light source, 14 protrusion, 15 control circuit, 16th 1 control interface, 17 second control interface, 20 dimming controller, 30 infrared remote controller, 41 ceiling surface, 42 wall, 43 floor surface, 50 light source range, 100 lighting system, 204 light source unit, 209 case, 214 protrusions, 307 support plate, 307b second surface

Claims (15)

A support plate having a first surface and a second surface opposite to the first surface and having a first opening formed therein.
A light source module provided on the first surface side of the support plate and
A case provided on the second surface side of the support plate and a second opening formed on the surface facing the support plate, and a case.
A light receiving portion housed in the case and exposed from the case by the second opening, and a light receiving portion.
A light source unit characterized by being equipped with. The light source unit according to claim 1, wherein the light receiving unit receives an infrared signal. The light source unit according to claim 1 or 2, wherein the first opening overlaps at least a part of the second opening when viewed from a direction perpendicular to the first surface. The light source unit according to any one of claims 1 to 3, wherein the first opening is deviated from the second opening in a direction along the first surface. The light source unit according to claim 4, wherein the first opening is displaced in a direction away from another light source unit adjacent to the second opening. The light source unit according to any one of claims 1 to 5, wherein the first opening is circular or elliptical. The light source unit according to any one of claims 1 to 5, wherein the first opening is a slit. The light source unit according to any one of claims 1 to 7, wherein the surface of the case on which the second opening is formed is separated from the second surface of the support plate. The light source unit according to any one of claims 1 to 8, wherein the second opening has a shape corresponding to the light receiving portion. The light source unit according to any one of claims 1 to 9, wherein the case has a protruding portion protruding toward the inside of the case around the second opening. The light source unit according to any one of claims 1 to 9, wherein the case has a protruding portion protruding toward the outside of the case around the second opening. The light source unit according to claim 10 or 11, wherein the protruding portion surrounds the light receiving portion. The light source unit according to any one of claims 1 to 12, further comprising a lighting device that controls a lighting state of the light source module according to a signal received by the light receiving unit. A cover provided on the first surface side of the support plate, covers the light source module, and transmits a signal received by the light receiving unit is provided.
The light source unit according to any one of claims 1 to 13, wherein the cover closes the first opening. The light source unit according to any one of claims 1 to 14.
The fixture body that holds the light source unit and
Lighting equipment characterized by being equipped with.

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