JP2023142354A - Lighting device - Google Patents

Abstract

To provide a lighting device that can prevent a structure having a large size from projecting downward from a ceiling plane and dust from adhering to the ceiling plane.SOLUTION: A lighting device includes: an embedded part to be embedded to a ceiling having a ceiling plane; and an exposed part exposed downward of the ceiling, having an undersurface and a lateral surface, and including a light source part disposed at the undersurface and an air suction port oriented in a direction inclined downward from a direction parallel to the ceiling plane and formed at the lateral surface.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a lighting device.

Patent Document 1 discloses a lighting device having an air purifying function. In the lighting device, an air outlet is provided at one end of the case, and a connector for connecting the case to an adapter is attached to the other end of the case. An air intake port is provided on the outer peripheral surface of the case along the other end of the case. The adapter includes a base. The base is attached to a socket provided in the ceiling. A fan and an ion generator are housed inside the case (paragraphs 0013, 0015, 0017 and 0019 and FIGS. 1 and 2).

Japanese Patent Application Publication No. 2017-033795

In the lighting device having an air purifying function disclosed in Patent Document 1, a fan and an ion generator are housed inside a case. For this reason, the case has a large size. Therefore, when the lighting device is attached to a ceiling, a large structure protrudes downward from the ceiling surface. Therefore, the appearance of the lighting device is worse than that of a lighting device that does not have an air purifying function.

Further, when a part of the lighting device is embedded in the ceiling to improve the appearance of the lighting device, the air intake port approaches the ceiling surface. Therefore, the air sucked into the intake port flows along the ceiling surface. Therefore, dust and the like contained in the flowing air adhere to the ceiling surface.

The present disclosure has been made in view of this problem. One aspect of the present disclosure aims to provide a lighting device that can suppress, for example, a structure having a large size from protruding downward from a ceiling surface and dust etc. from adhering to the ceiling surface. .

A lighting device according to an aspect of the present disclosure includes: an embedded part embedded in a ceiling having a ceiling surface; a light source part exposed below the ceiling, having a lower surface and a side surface, and disposed on the lower surface; and an exposed portion formed on the side surface with an air intake port facing in a direction inclined downward from a direction parallel to the surface.

FIG. 1 is a perspective view schematically illustrating a lighting device according to a first embodiment. FIG. 1 is a perspective view schematically illustrating a state in which the lighting device of the first embodiment is attached to a ceiling. FIG. 1 is a cross-sectional view schematically illustrating the lighting device of the first embodiment. FIG. 1 is a cross-sectional view schematically illustrating a state in which the lighting device of the first embodiment is attached to a ceiling. FIG. 3 is a side view schematically illustrating the flow of air sucked into the intake port of the lighting device of the reference example. FIG. 2 is a side view schematically illustrating the flow of air sucked into the air intake port of the lighting device according to the first embodiment. FIG. 3 is an exploded perspective view schematically illustrating a method of replacing the ion generating section provided in the lighting device of the first embodiment at the intake port. FIG. 3 is a cross-sectional view schematically illustrating a method for replacing the ion generating section provided in the lighting device of the first embodiment. FIG. 2 is a perspective view schematically illustrating a method of replacing the ion generating section provided in the lighting device of the first embodiment. FIG. 3 is a cross-sectional view schematically illustrating a method for replacing the ion generating section provided in the lighting device of the first embodiment. FIG. 2 is a perspective view schematically illustrating a method of replacing the ion generating section provided in the lighting device of the first embodiment. FIG. 3 is a cross-sectional view schematically illustrating a method for replacing the ion generating section provided in the lighting device of the first embodiment. FIG. 2 is a side view schematically illustrating the movement of the ion generator and the cover included in the lighting device of the first embodiment when the ion generator is replaced. FIG. 2 is a side view schematically illustrating the movement of the ion generator and the cover included in the lighting device of the first embodiment when the ion generator is replaced. FIG. 2 is a side view schematically illustrating the movement of the ion generator and the cover included in the lighting device of the first embodiment when the ion generator is replaced. FIG. 2 is a perspective view schematically illustrating a main body, an ion generator, and a cover included in the lighting device of the first embodiment.

Embodiments of the present disclosure will be described below with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and duplicate explanations will be omitted.

1 First Embodiment 1.1 Appearance of Lighting Device FIG. 1 is a perspective view schematically illustrating the lighting device of the first embodiment. FIG. 2 is a perspective view schematically illustrating a state in which the lighting device of the first embodiment is attached to a ceiling. FIG. 3 is a cross-sectional view schematically illustrating the lighting device of the first embodiment. FIG. 4 is a cross-sectional view schematically illustrating a state in which the lighting device of the first embodiment is attached to a ceiling.

The lighting device 1 of the first embodiment illustrated in FIGS. 1 to 4 is a downlight that is embedded in a ceiling 11 and illuminates the downward direction. The lighting device 1 has an ion supply function of sucking air, including ions in the sucked air to generate air containing ions, and blowing out the air containing the generated ions. The lighting device 1 may have an air conditioning function other than the ion supply function. For example, the lighting device 1 may have a cleaning function that cleans the air, a heating function that heats the air, a cooling function that cools the air, a humidification function that humidifies the air, a dehumidification function that dehumidifies the air, and the like.

The ceiling 11 to which the lighting device 1 is attached is the ceiling of various facilities, stations, factories, toilets, etc., and is preferably the ceiling of toilets etc. where an ion supply function is required for disinfection and/or sterilization.

As illustrated in FIGS. 1 to 4, the lighting device 1 includes an embedded part 21 and an exposed part 22.

An opening hole is formed in the ceiling 11 in which the lighting device 1 is embedded. The opening hole has a circular planar shape.

The embedded portion 21 has a cylindrical outer shape, has a diameter that matches the diameter of an opening formed in the ceiling 11, and has a large height. The embedded part 21 is inserted into the opening hole, placed above the ceiling surface 41 of the ceiling 11, and embedded in the ceiling 11.

The exposed portion 22 has an outer shape of an inverted truncated cone and has only a small height. The embedded portion 21 is connected to the upper end of the exposed portion 22 . The upper end of the exposed portion 22 has a diameter larger than the diameter of the opening formed in the ceiling 11. Therefore, even if the embedded portion 21 is inserted into the opening hole, the exposed portion 22 is not inserted into the opening hole, is placed below the ceiling surface 41 of the ceiling 11, and is exposed below the ceiling 11.

In the lighting device 1, only the exposed portion 22 having a small height protrudes downward from the ceiling surface 41, and the embedded portion 21 having a large height does not protrude downward from the ceiling surface 41. Thereby, it is possible to suppress a structure having a large size from protruding downward from the ceiling surface 41. Thereby, the appearance of the lighting device 1 can be improved.

Further, in the lighting device 1, the main part of the mechanism for providing the lighting device 1 with an ion supply function can be housed in the embedded portion 21 which has a large height but is not visible to the user. Thereby, the ion supply function can be provided to the lighting device 1 without impairing the compactness of the exposed portion 22 that is visible to the user.

As illustrated in FIGS. 1 and 2, the exposed section 22 includes a light source section 51.

The light source section 51 is an exit port that emits light for illuminating the lower part. The light source section 51 is arranged on the lower surface 61 of the exposed section 22.

An intake port 52 is formed in the side surface 62 of the exposed portion 22 . The plurality of intake ports 52 are arranged in the circumferential direction. An exhaust port 53 is formed in the lower surface 61 of the exposed portion 22 . The lighting device 1 takes in air from the outside of the lighting device 1 to the intake port 52 and exhausts air to the outside of the lighting device 1 from the exhaust port 53.

As described above, the exposed portion 22 has an outer shape of an inverted truncated cone. Therefore, the side surface 62 of the exposed portion 22 is inclined from a direction perpendicular to the ceiling surface 41, and is inclined downward in a direction D2 (see FIG. 4) from a direction D1 parallel to the ceiling surface 41 (see FIG. 4). Turn. Therefore, the air intake port 52 formed on the side surface 62 of the exposed portion 22 also faces in a direction D2 that is inclined downward from a direction D1 that is parallel to the ceiling surface 41.

The lighting device 1, which is a downlight, is different from a ceiling light, a light bulb, etc., in that the embedded part 21 embedded in the ceiling 11 occupies a large part, and the exposed part 22 exposed below the ceiling 11 occupies only a small part. have Therefore, in the lighting device 1, the light source section 51 must be placed in the exposed section 22, which occupies only a small portion, and the intake port 52 and the exhaust port 53 must be formed therein. However, in order for the light source section 51, the intake port 52, and the exhaust port 53 to perform their functions, a necessary area must be secured in the exposed section 22. In the lighting device 1, the air intake port 52 is formed on the side surface 62 of the exposed portion 22, thereby ensuring an area necessary for arranging the light source portion 51 and forming the exhaust port 53 on the lower surface 61 of the exposed portion 22. be able to. Thereby, the area necessary for arranging the light source section 51 and forming the intake port 52 and the exhaust port 53 can be secured in the exposed section 22.

FIG. 5 is a side view schematically illustrating the flow of air sucked into the intake port of the lighting device of the reference example. FIG. 6 is a side view schematically illustrating the flow of air sucked into the intake port of the lighting device according to the first embodiment.

As illustrated in FIG. 5, when the exposed portion 922 has a cylindrical outer shape, the side surface 962 of the exposed portion 922 is not inclined from a direction perpendicular to the ceiling surface 41, but is parallel to the ceiling surface 41. facing direction D1. Therefore, the air intake port 952 formed on the side surface 962 of the exposed portion 922 also faces in the direction D1 parallel to the ceiling surface 41. In this case, as shown by an arrow 971, the air taken into the intake port 952 flows in a direction opposite to the direction D1, and flows along the ceiling surface 41. For this reason, it is not possible to prevent dust and the like contained in the intake air from adhering to the ceiling surface 41 and forming deposits 972.

On the other hand, as shown in FIG. 6, when the exposed portion 22 has an inverted truncated cone shape, the side surface 62 of the exposed portion 22 is inclined from the direction perpendicular to the ceiling surface 41, and the side surface 62 of the exposed portion 22 is inclined from the direction perpendicular to the ceiling surface 41. It faces in a direction D2 that is inclined downward from a direction D1 that is parallel to the above. Therefore, the air intake port 52 formed on the side surface 62 of the exposed portion 22 also faces in a direction D2 that is inclined downward from a direction D1 that is parallel to the ceiling surface 41. In this case, as shown by an arrow 71, the air taken into the intake port 52 flows in the opposite direction to the direction D2 and does not flow along the ceiling surface 41. Therefore, it is possible to suppress dust and the like contained in the intake air from adhering to the ceiling surface 41 and forming deposits 972.

1.2 Internal Structure of the Lighting Device As illustrated in FIGS. 1 to 4, the lighting device 1 includes a case 81, a cover 82, a fan 83, an ion generator 84, and a light source 85.

As illustrated in FIGS. 1 to 4, the case 81 includes a disk-shaped portion 91, a cylindrical portion 92, an annular plate-shaped portion 93, and a tapered cylindrical portion 94. The disk-shaped part 91 and the cylindrical part 92 belong to the embedded part 21. The annular plate-shaped portion 93 and the tapered cylindrical portion 94 belong to the exposed portion 22 .

The disc-shaped portion 91 has a disc-shaped structure. The cylindrical portion 92 has a cylindrical structure. The annular plate-shaped portion 93 has an annular plate shape. The tapered cylindrical portion 94 has a cylindrical shape. The diameter of the tapered cylindrical portion 94 becomes smaller as it progresses from the upper end of the tapered cylindrical portion 94 to the lower end of the tapered cylindrical portion 94.

The outer circumferential end of the disk-shaped portion 91 is connected to the upper end of the cylindrical portion 92 . An inner peripheral end of an annular plate-shaped portion 93 is connected to the lower end of the cylindrical portion 92 . An upper end of the tapered cylindrical portion 94 is connected to an outer peripheral end of the annular plate portion 93 . An opening 121 is formed at the lower end of the tapered cylindrical portion 94 .

An air passage 101 is formed inside the case 81. The air passage 101 extends from the intake port 52 to the exhaust port 53 and guides air from the intake port 52 to the exhaust port 53.

The air passage 101 has a first section 111 and a second section 112.

The first section 111 extends upward from the lower intake port 52 along the lower surface of the annular plate-shaped portion 93 and the inner circumferential surface of the cylindrical portion 92 . The second section 112 passes through a position closer to the cylindrical axis of the cylindrical portion 92 and the tapered cylindrical portion 94 than the position where the first section 111 passes, and heads from above toward the exhaust port 53 below.

The cover 82 closes the opening 121 of the case 81. Cover 82 has a lower surface 61 of exposed portion 22 . For this reason, the exhaust port 53 is formed in the cover 82.

Fan 83 is arranged in air path 101. Fan 83 is arranged along the lower surface of disc-shaped portion 91 . The fan 83 sucks air from the first section 111 and blows the sucked air into the second section 112. Thereby, the fan 83 generates a flow of air from the intake port 52 toward the exhaust port 53 via the air path 101. Fan 83 is a sirocco fan. The fan 83 may be a fan other than the sirocco fan.

The ion generator 84 is arranged in the air passage 101. The ion generator 84 is arranged in the air passage 101 at a position closer to the exhaust port 53 than the position where the fan 83 is arranged. The ion generator 84 generates ions, and includes the generated ions in the flowing air. The ion generating unit 84 generates ions by generating electrical discharge in the air, and includes the generated ions in the air. The ion generation section 84 includes an ion generation unit, a holder, and the like. The ion generation unit generates ions. The holder holds the ion generation unit.

By arranging the fan 83 and the ion generator 84 in the air passage 101, the air taken into the intake port 52 passes through the ion generator 84, and air containing ions is generated. Further, air containing generated ions is exhausted from the exhaust port 53. As a result, air containing ions is discharged from the exhaust port 53 over a wide range.

The light source 85 emits downward illuminating light toward the light source section 51 serving as an exit port. The light source 85 is a light emitting diode, an incandescent light bulb, a fluorescent light, etc., and is preferably a light emitting diode.

1.3 Internal Structure of the Lighting Device FIG. 7 is an exploded perspective view schematically illustrating a method for replacing the ion generator provided in the lighting device of the first embodiment at the intake port.

As shown in FIG. 7, the main body 131 including the case 81 and the fan 83 has an internal space 141 formed therein.

The cover 82 and the ion generating section 84 can be inserted into and removed from the internal space 141 and can be attached to and removed from the main body 131. When the ion generating section 84 is attached to and detached from the main body 131, the cover 82 is attached and detached from the main body 131, and the ion generating section 84 is inserted into and removed from the internal space 141 via the opening 121 of the case 81. This makes it possible to replace the ion generating section 84 which has a limited lifespan and requires replacement.

FIGS. 8A, 9A, and 10 are cross-sectional views schematically illustrating a method for replacing the ion generating section provided in the lighting device of the first embodiment. FIGS. 8B and 9B are perspective views schematically illustrating a method of replacing the ion generator provided in the lighting device of the first embodiment.

When the ion generating section 84 is attached to the main body 131, the ion generating section 84 is first moved upward D3 from a position below the opening 121 of the case 81, as shown in FIGS. 7 and 8A. I am made to do so. Thereby, the ion generator 84 is moved from a position below the opening 121 of the case 81 to a position above the opening 121 of the case 81 via the opening 121 of the case 81. The ion generator 84 stops at a position where it hits the fan 83. Thereby, the ion generating section 84 is inserted into the internal space 141 of the main body 131.

Subsequently, as illustrated in FIGS. 7 and 8B, the ion generating section 84 is slid in the sliding direction D4 in the internal space 141 of the main body 131. Thereby, the ion generator 84 is connected to the main body 131, as shown in FIG. 9B. The sliding direction D4 is a direction perpendicular to the upward direction D3. After the ion generator 84 is connected to the main body 131, it is held by the main body 131. Thereby, it is possible to suppress the ion generating section 84 from falling before the cover 82 is attached to the case 81.

Subsequently, as shown in FIGS. 7 and 10, the cover 82 is moved from the position below the opening 121 of the case 81 in the upward direction D3. As a result, the cover 82 is moved from a position below the opening 121 of the case 81 to a position where it closes the opening 121 of the case 81 and is attached to the case 81.

FIGS. 11 to 13 are side views schematically illustrating the movement of the ion generator and the cover included in the lighting device of the first embodiment when the ion generator is replaced. be. FIG. 14 is a perspective view schematically illustrating a main body, an ion generator, and a cover included in the lighting device of the first embodiment.

As shown in FIGS. 11-14, the body 131 includes a first electrical connector 151. As shown in FIGS. The ion generating section 84 also includes a second electrical connector 152.

The first electrical connector 151 is located in the sliding direction D4 when viewed from the second electrical connector 152 provided in the ion generating section 84 that is inserted into the internal space 141 of the main body 131 and hits the fan 83. Therefore, the second electrical connector 152 is connected to the first electrical connector 151 when the ion generating section 84 moves in the sliding direction D4 in the internal space 141 of the main body 131. Thereby, the ion generating section 84 is electrically connected to the main body 131 and can receive the power necessary for operation from the main body 131 via the first electrical connector 151 and the second electrical connector 152. . Further, the ion generating section 84 is fixed to the main body 131.

As illustrated in FIGS. 11 to 14, the ion generating section 84 has a first wall surface 161. Further, the cover 82 has a second wall surface 162 that is in contact with the first wall surface 161. A structure other than the cover 82 may have a second wall surface 162 in contact with the first wall surface 161. Further, the ion generating section 84 includes an ion generating unit 171 and a holder 172. The holder 172 holds the ion generation unit 171 and has a first wall surface 161.

The first wall surface 161 of the ion generating section 84 and the second wall surface 162 of the cover 82 have an inclination with respect to a plane perpendicular to the sliding direction D4. The first wall surface 161 of the ion generating section 84 and the second wall surface 162 of the ion generating section 84 have the same slope. The slope of the first wall surface 161 of the ion generating section 84 and the second wall surface 162 of the ion generating section 84 is a slope that approaches the slide direction D4 as it moves downward.

The second electrical connector 152 is arranged on one side of the ion generating section 84 in the sliding direction D4, and the first wall surface 161 of the ion generating section 84 is arranged on the other side of the ion generating section 84 in the sliding direction D4. will be placed in Thereby, when the first wall surface 161 is pushed, the second electrical connector 152 can be moved toward the first electrical connector 151 located on one side of the ion generating section 84 .

As illustrated in FIGS. 11 to 13, when the cover 82 is moved in the upward direction D3, the second wall surface 162 of the cover 82 in the internal space 141 of the main body 131 is In contact with the wall surface 161 of. Furthermore, as the cover 82 moves in the upward direction D3, the area of the second wall surface 162 of the cover 82 that is in contact with the first wall surface 161 of the ion generating section 84 expands downward. Here, as described above, the slope of the first wall surface 161 of the ion generating section 84 and the second wall surface 162 of the cover 82 is a slope that approaches the sliding direction D4 as it moves downward. As the area in contact with the first wall surface 161 expands downward, the ion generating section 84 is pushed in the sliding direction D4 by the cover 82 and is moved in the sliding direction D4. Thereby, the cover 82 is moved in the upward direction D3, and the ion generating section 84 is moved in the sliding direction D4. This allows the cover 82 to be attached to the main body 131 even if the second electrical connector 152 is not fully inserted into the first electrical connector 151 before the cover 82 is attached to the main body 131. The second electrical connector 152 can then be fully inserted into the first electrical connector 151. Thereby, it is possible to prevent the electrical connection between the main body 131 and the ion generating section 84 from becoming incomplete after the ion generating section 84 is replaced.

As illustrated in FIG. 14, the ion generating section 84 includes a claw 181. The claw 181 is caught on the main body 131 when the ion generating section 84 is moved in the sliding direction D4. Thereby, it is possible to suppress the ion generating section 84 from falling.

The present disclosure is not limited to the embodiments described above, and the present disclosure is not limited to the embodiments described above, but has a configuration that is substantially the same as the configuration shown in the embodiments described above, a configuration that has the same effects, or a configuration that can achieve the same purpose. You can also replace it with

1 lighting device, 11 ceiling, 21 embedded part, 22 exposed part, 41 ceiling surface, 51 light source part, 52 intake port, 53 exhaust port, 61 bottom surface, 62 side surface, 71 arrow, 81 case, 82 cover, 83 fan, 84 ion generating part, 85 light source, 91 disc-shaped part, 92 cylindrical part, 93 annular plate-shaped part, 94 tapered cylindrical part, 101 air passage, 111 first section, 112 second section, 121 opening, 131 main body, 141 internal space, 151 first electrical connector, 152 second electrical connector, 161 first wall surface, 162 second wall surface, 171 ion generation unit, 172 holder, 181 claw, 922 exposed part, 962 side surface , 952 intake port, 971 arrow, 972 deposit.

Claims (7)

an embedded part embedded in a ceiling having a ceiling surface;
An air intake port is formed on the side surface, is exposed below the ceiling, has a lower surface and a side surface, includes a light source section disposed on the lower surface, and faces in a direction inclined downward from a direction parallel to the ceiling surface. an exposed part;
A lighting device comprising: The lighting device according to claim 1, wherein an exhaust port is formed on the lower surface. a fan that generates a flow of air from the intake port toward the exhaust port;
The lighting device according to claim 2, further comprising an ion generating section that generates ions and includes the ions in the air. A main body having an internal space formed therein;
generates ions, is insertable into and removed from the internal space, is connected to the main body by sliding in the sliding direction in the internal space, and has a first wall surface having a slope with respect to a plane perpendicular to the sliding direction. An ion generating section;
a structure that can be inserted into and removed from the internal space and has a second wall surface that has the same slope as the slope and is in contact with the first wall surface in the internal space;
The lighting device according to any one of claims 1 to 3, comprising: the body includes a first electrical connector;
The lighting device according to claim 4, wherein the ion generating section includes a second electrical connector that is connected to the first electrical connector when the ion generating section slides in the sliding direction. the second electrical connector is arranged on one side of the ion generator,
The lighting device according to claim 5, wherein the first wall surface is arranged on the other side of the ion generating section. The lighting device according to any one of claims 4 to 6, wherein the slope of the first wall surface and the slope of the second wall surface are slopes that approach the sliding direction as the slope progresses downward.

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