JP6057675B2 - lighting equipment - Google Patents

Description

  The present invention relates generally to lighting fixtures, and more particularly to lighting fixtures that include an ion generating unit.

  As a lighting fixture described in Japanese Patent Application Laid-Open No. 2007-227043 (hereinafter referred to as Patent Literature 1), a lighting fixture including an ion generator as an ion generating unit is known.

  The lighting fixture described in patent document 1 is a lighting fixture installed in a ceiling. The main body of the lighting fixture is provided with a plurality of ion generators. Each ion generator is arranged so as to be rotationally symmetric with respect to the center of the main body. The ion generator emits ions in a substantially horizontal direction from the main body toward the outside.

  Moreover, the said lighting fixture is provided with the ventilation part. The blower blows in a direction substantially orthogonal to the direction in which ions are released in a substantially horizontal direction. Ions emitted from the ion generator are attracted in a direction substantially orthogonal to the emitted direction and diffuse into the room while falling.

  In the luminaire described in Patent Document 1, ions are released from the ion generator in a direction orthogonal to a tangent line on the outer periphery of the luminaire in a substantially horizontal direction. On the other hand, the direction which a ventilation part blows is a direction orthogonal to the direction where ion is discharge | released among substantially horizontal directions. In the ion generator, a discharge opening from which ions are discharged from the ion generator and a blower opening from which the air blown by the blower is blown out from the ion generator are formed. When the fan as the blower rotates in the reverse direction, the air blown by the blower is sucked into the inside of the ion generator through the blower opening.

JP 2007-227043 A

  In the luminaire described in Patent Document 1, the blower opening and the discharge opening of the ion generator face in a substantially horizontal direction. In the illumination device described in Patent Document 1, ions emitted from the ion generator are attracted in a direction substantially orthogonal to the emitted direction and are diffused in the room while being dropped. As described above, in the lighting device described in Patent Document 1, since ions are not actively diffused downward, particularly in a region immediately below the lighting device, the ions disappear before reaching the floor surface from the vicinity of the ceiling. It is easy to diffuse ions throughout the room.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a luminaire provided with an ion generation unit, which is capable of diffusing ions entirely in a space such as a room.

The lighting fixture according to the present invention includes a main body and an ion generation unit. The main body has a light source. The ion generation unit includes a fan, an ion generation device, and a housing that is installed on the upper surface of the main body and accommodates the fan. The housing has a suction port and a blower outlet. The suction port allows air to flow into the housing. A blower outlet discharge | releases ion with the air from the inside of a housing | casing to the exterior of a main body. The suction port is disposed at the outer edge portion of the main body, and is directed in a substantially horizontal direction so that air flows in a direction from the outer side to the inner side of the upper surface. The air outlet is directed substantially vertically downward. The casing has a wall portion that adjusts the direction in which the air discharged from the blower outlet flows by a surface inclined in a range of 40 ° or more and 60 ° or less with respect to the horizontal direction and is located inside the casing.

  ADVANTAGE OF THE INVENTION According to this invention, it is a lighting fixture provided with the ion generating unit, Comprising: The lighting fixture which can diffuse ion entirely with respect to space, such as a room | chamber interior, can be provided.

It is the perspective view which looked at the lighting fixture according to this invention from diagonally upward. It is the perspective view which looked at the lighting fixture according to this invention from diagonally downward. It is the perspective view which looked at the lighting fixture according to this invention from diagonally downward, Comprising: It is a figure which shows the inside of a part of the said lighting fixture. It is the perspective view which looked at the lighting fixture according to this invention from diagonally upward, Comprising: It is a figure which expands and shows an ion generating unit especially. It is sectional drawing of the lighting fixture seen from the direction which the V line | wire of FIG. 4 shows, Comprising: It is a figure which expands and shows an ion generation unit especially. It is the perspective view which looked at the lighting fixture according to this invention from diagonally upward, Comprising: It is a figure which expands and shows especially the inside of an ion generation unit. It is the perspective view which looked at the ion generating unit of the lighting fixture according to this invention from diagonally downward. It is the perspective view which looked at the lighting fixture according to this invention from diagonally downward, Comprising: It is a figure which shows schematically the direction from which ion is discharge | released. It is the schematic which shows the density | concentration distribution of the ion in the room | chamber interior in which the lighting fixture according to this invention was installed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a luminaire 100 according to the present invention. FIG. 1 is a perspective view of the luminaire 100 as viewed obliquely from above. The luminaire 100 is installed on a luminaire installation surface such as a ceiling (not shown). The luminaire 100 includes a main body 1, two ion generation units 10, and a heat sink 3. The ion generation unit 10 has a housing 20. The housing 20 is installed on the upper surface of the main body 1. The main body 1 houses a light source unit including an LED (light emitting diode) as a light source. The light source unit will be described later.

  FIG. 2 is a perspective view of the luminaire 100 as viewed obliquely from below (the floor side that is the irradiation surface). The upper surface of the main body 1 is a surface on the side opposite to the outer peripheral cover 4a forming the light emitting surface of the lighting fixture 100, that is, a surface on the ceiling side. The main body 1 includes an outer frame member 2, a heat radiating plate 3, a circuit housing portion 40, an outer peripheral cover 4a, a central cover 4b, a frame 5, and the like which will be described later.

  A heat radiating plate 3 (see FIG. 1) as an example of a heat radiating portion has a substantially disk shape having an opening (not shown) in the center. The heat radiating plate 3 is preferably formed from a metal material such as aluminum or iron having good heat dissipation and thermal conductivity. However, the material which comprises the heat sink 3 is not specifically limited. The housing 20 is fixed to the upper surface 3c of the heat radiating plate 3 constituting the upper surface of the main body 1 with screws or the like. That is, the ion generating unit 10 is attached in a state where it is exposed to the outside on the upper surface of the main body 1 without being covered with other members while being attached to the main body 1. In addition, the housing | casing 20 may be installed in the main body 1 through the mounting base etc. which are not shown in figure. The heat radiating plate 3 is disposed between the portion of the main body 1 that houses the light source unit and the ion generation unit 10.

  The circuit housing portion 40 is fixed to the heat radiating plate 3 so as to be fitted into the central opening (not shown) of the heat radiating plate 3. The circuit housing portion 40 protrudes upward from the upper surface 3 c of the heat radiating plate 3. However, the circuit accommodating part 40 may be attached to the heat sink 3 via an attachment base (not shown) or an interference member formed of an elastic material. The circuit accommodating portion 40 has a box shape so as to include a space for accommodating an electric circuit or the like necessary for driving the ion generating unit 10. In addition, an electric circuit and the like necessary for illumination and dimming of the luminaire 100 are disposed inside the circuit housing portion 40 and a portion of the main body 1 that houses the light source unit. The circuit accommodating portion 40 is disposed at the center of the main body 1 and the heat radiating plate 3. A center C indicating the center of the main body 1 passes through the circuit housing portion 40.

  The outer frame member 2 has a substantially annular shape. The outer frame member 2 is attached to the outer edge portion 3b of the heat radiating plate 3 so as to be arranged on the outer side in the radial direction of the heat radiating plate 3. The center of the circle formed by the outer edge portion 3 b of the heat radiating plate 3 and the center of the circle formed by the outer edge 2 a of the outer frame member 2 and the circle formed by the inner edge substantially coincide with the center C of the main body 1. The outer edge of the heat radiating plate 3 is positioned outside the inner edge of the outer frame member 2 so that the outer edge (not shown) of the heat radiating plate 3 is positioned outside the inner edge of the outer frame member 2 along the radial direction of the heat radiating plate 3 and the outer frame member 2. 2 is fitted on the inner edge.

  Above the main body 1, the positions of the two ion generation units 10 are symmetric with respect to the center C of the main body 1. A packing 41 and a packing 12 are attached to the upper end portion of the circuit housing portion 40 and the upper end portion of each housing 20, respectively. The packing 41 and the packing 12 are sponge-like. When the luminaire 100 is installed on the ceiling, the packing 12 and the packing 41 are in contact with the ceiling.

  An opening 11 is formed inside the packing 12 on the upper surface of each housing 20. The packing 12 is attached to the edge of the opening 11. When the luminaire 100 is installed on the ceiling, the opening 12 is blocked by the ceiling by the packing 12 closing the space between the ceiling and the edge of the opening 11. Since the material which comprises the ion generation unit 10 can be reduced by the opening 11, the lighting fixture 100 can be reduced in weight.

  As shown in FIG. 2, the main body 1 includes an outer peripheral cover 4a and a center cover 4b that diffuse light generated from the light source. The center cover 4b is disposed at the center C of the main body 1 and has a substantially disc shape. In the main body 1, a substantially annular frame 5 is disposed between the outer edge of the center cover 4b and the inner edge of the outer peripheral cover 4a. The outer periphery cover 4a has a substantially annular shape. The inner diameter of the outer peripheral cover 4a is larger than the diameter of the central cover 4b. The outer peripheral cover 4 a is disposed on the outer side in the radial direction of the central cover 4 b so as to be sandwiched between the frame 5 and the inner edge of the outer frame member 2. The center of the circle formed by the outer edge of the central cover 4b and the center of the circle formed by the outer edge of the outer peripheral cover 4a and the circle formed by the inner edge substantially coincide with the center C of the main body 1.

  A louver 8 is attached to the outer frame member 2. The louver 8 is attached to the outer frame member 2 at a position that covers a later-described outlet. The outer frame member 2 has a notch formed at a position facing the air outlet. The louver 8 is fitted into the notch.

  FIG. 3 is a perspective view of the luminaire 100 as viewed obliquely from below, and is a view showing a part of the luminaire 100. The direction pointing from the bottom to the top in FIG. 3 is vertically downward, and the direction pointing from the top to the bottom in FIG. 3 is vertically upward. The state of the lighting fixture 100 shown in FIG. 3 is a state in which the outer peripheral cover 4a is removed from the state of the lighting fixture 100 shown in FIG.

  As shown in FIG. 3, the main body 1 houses a light source unit 6 including a substrate on which an LED as a light source is attached and a light guide member that diffuses light emitted from the LED. The light source unit 6 is disposed around a center C, which is the central portion of the main body 1, and is fixed to a frame of the main body 1 (not shown). A frame 5 is arranged below the light source unit 6 (on the irradiation surface side). In the heat radiating plate 3, a reflective sheet 7 is attached at a position facing the outer peripheral cover 4a (see FIG. 2).

  FIG. 4 is a perspective view of the luminaire 100 as viewed obliquely from above, and is an enlarged view of the ion generation unit 10 in particular. As shown in FIG. 4, the housing 20 has a front wall portion 21, a peripheral wall 28, and a bottom portion 27 (not shown in FIG. 4) in addition to the top wall 25 to which the packing 12 is attached. The front wall portion 21 faces substantially in the horizontal direction and extends along the direction in which the outer edge 2a of the outer frame member 2 extends. Further, the front wall portion 21 is disposed along the outer edge portion 3 b of the heat radiating plate 3. Here, the front wall portion 21 facing in the substantially horizontal direction is not limited to the entire front wall portion 21 extending in the substantially vertical direction, and at least a part of the front wall portion 21 faces in the substantially horizontal direction. To do. The front wall portion 21 has a portion that faces substantially in the horizontal direction (in other words, a portion that is substantially orthogonal to the horizontal plane) and a portion that faces in the horizontal direction and vertically upward (in other words, a portion that is inclined with respect to the horizontal plane). . The peripheral wall 28 extends along a substantially vertical direction so as to surround the front wall portion 21. Further, the peripheral wall 28 forms a portion of the side surface of the housing 20 that faces inward in the radial direction of the main body 1 and a portion that faces the outer periphery of the main body 1 (in other words, the outer edge 2 a of the outer frame member 2).

  A suction port 23 is formed in the front wall portion 21 of the housing 20. As indicated by the white arrow D <b> 1 in FIG. 4, the air inlet 23 allows air to flow from the outside of the main body 1 toward the inside of the housing 20. The suction port 23 allows air to flow inwardly from the outside of the upper surface 3 c of the radiator plate 3 in the radial direction of the main body 1 in the vicinity of the outer edge 3 b of the radiator plate 3, that is, the outer edge 2 a of the outer frame member 2. The suction port 23 is disposed in the vicinity of the outer edge of the main body 1. Specifically, the housing 20 is attached to the upper surface 3 c of the heat radiating plate 3 so that the position of the front wall portion 21 substantially matches the vicinity of the outer edge portion 3 b on the upper surface 3 c of the heat radiating plate 3. When the outer frame member 2 is attached to the heat radiating plate 3, the position of the front wall portion 21 substantially coincides with the vicinity of the inner edge of the outer frame member 2. Thereby, the position of the suction port 23 substantially coincides with the position of the inner edge of the outer frame member 2. The air that has flowed into the inside of the housing 20 through the suction port 23 flows out from the inside of the housing 20 toward the outside of the outer frame member 2 as indicated by the white arrow D2 in FIG.

  FIG. 5 is a cross-sectional view passing through the air outlet 24 as seen from the direction indicated by the line V in FIG. 4, and particularly an enlarged view of the ion generation unit 10. As shown in FIG. 5, an air outlet 24 is formed in the housing 20. The air outlet 24 allows air to flow out from the inside of the housing 20 toward the outside of the main body 1 and faces substantially vertically downward. That is, the blower outlet 24 is arrange | positioned on the plane extended in the direction which is not a direction parallel to the direction where the surface of the suction inlet 23 is extended. The inlet 23 and the outlet 24 are formed at positions adjacent to each other in the housing 20. Here, the fact that the air outlet 24 faces substantially vertically downward is not limited to the fact that the whole air outlet 24 extends in a substantially horizontal direction, but at least a part of the air outlet 24 faces substantially vertically downward. The surface of the opening forming the air outlet 24 may be inclined with respect to the horizontal plane.

  A vortex fan 30 is accommodated in the housing 20. The vortex fan 30 includes a motor 31 and a motor shaft 32. The motor shaft 32 extends in a substantially vertical direction. That is, the rotational axis of the vortex fan 30 extends in a substantially vertical direction. The motor 31 is connected to an electric circuit (not shown). The rotation of the vortex fan 30 accompanying the driving of the motor 31 generates an air flow inside the housing 20. This air flow changes the pressure distribution inside the housing 20, so that air flows from the outside of the main body 1 into the housing 20, and air flows from the inside of the housing 20 to the outside of the main body 1. To do.

Inside the housing 20, an ion generating element 50 as an example of an ion generating device is arranged. The ion generating element 50 is attached on the bottom 27 of the housing 20. The bottom 27 constitutes the bottom surface of the housing 20 that faces the top surface 3 c of the heat radiating plate 3. The ion generating element 50 is connected to an electric circuit (not shown). In the ion generating element 50, positive ions and negative ions are generated. The positive ions are H ⁺ (H ₂ O) _m (m is an arbitrary natural number), and the negative ions are O ²⁻ (H ₂ O) _n (n is an arbitrary natural number). By such positive ions and negative ions, positive ions and negative ions attach to and bind to the surface of bacteria or fungi in the air, and the reaction that takes place causes hydroxyl radicals (.OH) or radicals that are active species. Hydrogen oxide (H ₂ O ₂ ) is generated, and bacteria or fungi can be sterilized by the oxidizing action.

  These ions are mixed in the air that has flowed into the housing 20 upstream of the air outlet 24. From the blower outlet 24, the air in which these ions were mixed flows out. In this way, positive ions and negative ions can be effectively diffused into the space where the lighting apparatus 100 is installed.

  Inside the housing 20, the upstream portion of the air outlet 24 is shaped so that the duct extends. A guide wall 26 as an example of a wall portion is formed inside the housing 20. The guide wall 26 forms the ceiling of the housing 20 upstream of the air outlet 24 and in the vicinity of the air outlet 24. The guide wall 26 guides the air flowing toward the air outlet 24. The direction in which the guide wall 26 extends is included in a range of 40 ° to 60 ° with respect to the horizontal direction. That is, the angle at which the surface formed by the guide wall 26 is inclined with respect to the horizontal direction is included in the range of 40 ° to 60 °. The direction in which the entire guide wall 26 extends is preferably 50 ° with respect to the horizontal direction. With such a shape of the housing 20, the guide wall 26 adjusts the direction in which the air flowing out from the outlet 24 flows so that the air flows in a range of 40 ° to 60 ° with respect to the horizontal direction.

  FIG. 6 is a perspective view of the luminaire 100 as viewed obliquely from above, and particularly shows an enlarged view of the inside of the ion generation unit 10. In the lighting fixture 100 shown in FIG. 6, the upper surface wall 25 (refer FIG. 4) is removed from the housing | casing 20 of the ion generation unit 10 of the lighting fixture 100 shown in FIG. In the housing 20, the upper surface wall 25 is detachably attached by screws or the like.

  As shown in FIG. 6, the housing 20 has a plurality of legs including legs 22a, 22b, and 22c. The leg portions 22 a, 22 b, and 22 c are protruding portions that extend from the peripheral wall 28 toward the outside of the housing 20. The casing 20 is mounted on the main body 1 by fixing these leg portions 22a, 22b, and 22c to the heat radiating plate 3 or the outer frame member 2 with screws or the like.

  The leg portion 22 a is a part that fixes the housing 20 to the outer frame member 2. The leg portions 22a are arranged on both sides of the air outlet 24 so as to sandwich the cutout of the outer frame member 2 and the louver 8. The leg portion 22 b is arranged inside the inner edge of the outer frame member 2 along the radial direction of the outer frame member 2. The leg portion 22 b is a part that fixes the housing 20 to the heat radiating plate 3. The leg portion 22 c is a portion that fixes the housing 20 to the heat radiating plate 3 on the inner side in the radial direction of the heat radiating plate 3 than the leg portion 22 b. As shown in FIG. 6, for example, a vibration isolating member 38 such as silicon is disposed between the leg portion 22 c and the heat radiating plate 3 and between the leg portion 22 a and the outer frame member 2. Thereby, it is possible to prevent vibration or the like due to the operation of the vortex fan 30 from being transmitted to the main body 1. Further, it is possible to prevent the housing 20 from being distorted due to the thermal expansion of the heat radiating plate 3.

  The peripheral wall 28 has a shape surrounding the vortex fan 30. Along the air flow direction, the peripheral wall 28 has a shape along a tangent line of a circle that forms the outer shape of the vortex fan 30 downstream of the front wall portion 21 (see FIG. 4). Moreover, the surrounding wall 28 has a shape which leaves | separates from the said tangent of the said circle so that the width | variety of the flow path inside the housing | casing 20 may spread as the blower outlet 24 approaches.

  The housing 20 is configured such that the heat radiating plate 3 located below the housing 20 is cooled by the airflow generated by the rotation of the vortex fan 30. As shown in FIG. 6, when the ion generation unit 10 is viewed from above, the vortex fan 30 rotates counterclockwise. The bottom portion 27 faces the heat radiating plate 3. As shown in FIG. 5, a gap 3 a exists between the bottom portion 27 of the housing 20 and the heat radiating plate 3. More specifically, a gap 3 a is partially formed between the bottom 27 and the upper surface 3 c of the heat radiating plate 3 around the housing 20. The size of the gap 3a between the bottom 27 and the heat radiating plate 3 is changed by appropriately adjusting the shape of the housing 20 and the shape of the upper surface of the heat radiating plate 3, for example.

  In addition, a plurality of openings 29 are formed in the bottom portion 27 of the housing 20 so as to allow communication between the outside and the inside of the housing 20. These openings 29 face the heat radiating plate 3 and penetrate the bottom portion 27.

  FIG. 7 is a perspective view of the ion generation unit 10 as viewed obliquely from below. Due to the influence of the airflow generated inside the housing 20, air flows into the housing 20 through the opening 29 from below the bottom portion 27. At this time, since the airflow generated from the vortex fan 30 passes through the upper surface 3c (see FIG. 6) of the heat radiating plate 3, heat dissipation by the heat radiating plate 3 is promoted, and therefore the amount of heat contained in the heat radiating plate 3 can be reduced. Air that has passed through the gap 3 a and flows into the inside of the housing 20 from below the bottom 27 through the opening 29 flows out of the air outlet 24 together with air that flows in through the suction port 23.

  As shown in FIG. 6, the louver 8 has a plurality of slats 8a. In the louver 8, the number of slats 8 a is eleven. The louver 8 is attached to the outer frame member 2 so that each slat 8a extends along a substantially vertical direction and a substantially horizontal direction. Each wing plate 8 a extends in a direction substantially parallel to the radial direction of the main body 1. The movement of the louver 8a in the louver 8 is restricted, and the louver 8a is fixed to the louver 8 so that the louver 8a does not move relative to the louver 8 and the outer frame member 2. The shape of the slat 8a is the same. Each slat 8a is disposed inside the housing 20 (see FIG. 5). The air that flows out from the blower outlet 24 to the outside of the housing 20 flows smoothly from the blower outlet 24 after flowing smoothly along the wing plate 8a.

  As shown in FIG. 6, the ion generation element 50 includes a positive ion generation unit 51 and a negative ion generation unit 52. A plurality of air flow paths are partitioned along the circumferential direction of the outer frame member 2 inside the housing 20 by the wing plates 8a. Therefore, since positive ions and negative ions generated in the ion generating element 50 are released from the blower outlet 24 while being dispersed by the wing plate 8a, in the housing 20 or immediately after being discharged from the blower outlet 24. , Neutralization can be prevented. The interval between the two adjacent slats 8a is preferably an interval that does not allow the user's finger to enter.

  Moreover, as shown in FIG. 5, the upper surface 8b of each slat 8a is inclined with respect to the vertical direction and the horizontal direction so that the inner end of the slat 8a along the radial direction of the main body 1 faces downward. doing. The wing plate 8 a is disposed inside the housing 20 in a portion having a duct shape formed by the guide wall 26. The louver 8, the outer frame member 2, and the housing are arranged so that the air flowing along the guide wall 26 can flow into the space between two adjacent blades 8 a from a direction substantially orthogonal to the upper surface of each blade 8 a. Each shape with the body 20 is formed. The direction in which the upper surface of each slat 8a extends is preferably about 30 ° with respect to the horizontal direction. The discharge performance of the ion generating element 50 can be maintained by adjusting the position of the upper surface of the wing plate 8a so that a predetermined distance is separated between the ion generating element 50 and the louver 8.

  An indicator 60 is disposed inside the housing 20. A power supply circuit (not shown) and the indicator 60 are connected by a wiring 39. The wiring 39 includes a wiring connected to the ion generating element 50 and a wiring connected to the vortex fan 30. When the ion generating element 50 operates, that is, when the ion generating element 50 generates ions, the indicator 60 emits light. The light of the indicator 60 that emits light inside the housing 20 leaks out of the lighting apparatus 100 through the louver 8.

  FIG. 8 is a perspective view of the luminaire 100 as viewed obliquely from below, and is a diagram schematically showing the direction in which ions are released. In addition, the white arrow shown in FIG.4, 5,7,8 shows the direction where an airflow flows roughly, and does not show the speed or scale of an airflow. As shown by the white arrows in FIG. 8, the air flowing out of the main body 1 through the louvers 8 a (see FIG. 6) of the louver 8 spreads in the horizontal direction and is released below the main body 1. Is done. At this time, part of the air containing ions is released from the inside of the housing 20 along the guide wall 26. Therefore, the direction in which the air discharged from the air outlet 24 (see FIG. 5) and the louver 8 flows is adjusted in a range of 40 ° or more and 60 ° or less with respect to the horizontal direction. In addition, some of the ions that hit the guide wall 26 when being discharged from the blower outlet 24 are released to the center side of the main body 1 from the outside in the radial direction of the main body 1, i.e., substantially directly below the lighting fixture 100. The Thereby, ions can be diffused not only in a region separated from the lighting fixture 100 in the room, but also in a region immediately below the lighting fixture 100. Thus, in the lighting fixture 100, ions emitted from the upper part of the space such as the room can be effectively diffused in a relatively wide range of the space such as the room.

  As described above, the lighting fixture 100 includes the main body 1 and the ion generation unit 10. The main body 1 houses a light source unit 6 including an LED as a light source. The ion generation unit 10 includes a vortex fan 30, an ion generation element 50, and a housing 20 that is installed on the upper surface 3 c of the heat sink 3 in the main body 1 and accommodates the vortex fan 30. The housing 20 has a suction port 23 and an air outlet 24. The suction port 23 allows air to flow into the housing 20. The air outlet 24 discharges ions together with air from the inside of the housing 20 to the outside of the main body 1. The suction port 23 is disposed in the outer edge 3b of the heat radiating plate 3 of the main body 1, and is directed in a substantially horizontal direction so that air flows in the direction from the outer side to the inner side of the upper surface 3c of the heat radiating plate 3. The blower outlet 24 is directed substantially vertically downward.

  According to the luminaire 100, the air outlet 24 of the ion generation unit 10 faces substantially vertically downward, so that ions generated by the ion generation unit 10 can be actively diffused downward. Therefore, ions can be effectively diffused into the space without annihilating the ions emitted from the upper part of the space such as the room before diffusing into the entire space such as the room.

  Moreover, in the lighting fixture 100, the suction inlet 23 faces a substantially horizontal direction, and the blower outlet 24 faces a substantially vertical downward direction. Thus, in the lighting fixture 100, the ion generation unit 10 can be installed in the main body 1 so that the suction inlet 23 and the blower outlet 24 are not located on the same plane. Therefore, it is possible to prevent an air short circuit from occurring between the air outlet 24 and the air inlet 23. By preventing the occurrence of a short circuit, it is unlikely that ions once discharged from the air outlet 24 are sucked into the inside of the ion generating unit 10 from the air inlet 23, so that ions are diffused throughout the room. Is possible.

  Further, the suction port 23 faces substantially in the horizontal direction and the blower outlet 24 faces substantially vertically downward, thereby preventing an air short circuit from occurring between the blower outlet 24 and the suction port 23. However, the distance between the inlet 23 and the outlet 24 can be reduced. Therefore, the housing 20, the ion generation unit 10, and the lighting fixture 100 can be reduced in size.

  By doing in this way, the lighting fixture 100 provided with the ion generation unit 10 which can diffuse ion effectively in space, such as a room | chamber interior, can be provided.

  Further, in the lighting apparatus 100, the suction port 23 is disposed in the vicinity of the outer edge portion 3 b on the upper surface 3 c of the heat radiating plate 3 and faces the outer side in the radial direction of the main body 1. More specifically, the suction port 23 is directed in a substantially horizontal direction so that air flows in the direction from the outer side in the radial direction of the main body 1 toward the inner side on the upper surface 3 c of the heat radiating plate 3. According to this configuration, dust or the like attached to the main body 1 can be prevented from being sucked into the ion generation unit 10. Thereby, the fall of the performance of the ion generation unit 10 can be prevented.

  The inlet 23 and the outlet 24 are disposed adjacent to each other in the housing 20. Thus, since the distance between the suction port 23 and the air outlet 24 is reduced by arranging the suction port 23 and the air outlet 24 in the housing 20 so as to be adjacent to each other, the housing 20 and the ion generation unit 10 and the lighting apparatus 100 can be reduced in size. Moreover, since the suction port 23 and the air outlet 24 are directed so as not to be located on the same plane, even if they are adjacent to each other, the occurrence of a short circuit can be suppressed.

  A guide wall 26 is formed inside the housing 20. The guide wall 26 forms a surface that is inclined in the range of 40 ° to 60 ° with respect to the horizontal direction. The guide wall 26 adjusts the direction in which the air discharged from the blower outlet 24 flows by a surface inclined in a range of 40 ° or more and 60 ° or less with respect to the horizontal direction.

  According to this configuration, since ions can be emitted from the region immediately below the lighting fixture 100 to the region at the end of the space, it is possible to more effectively diffuse the entire space in a room or the like.

  The luminaire 100 includes a vortex fan 30. The vortex fan 30 has a motor shaft 32 extending in a substantially vertical direction and is accommodated in the housing 20. The vortex fan 30 generates an airflow that flows in a direction substantially parallel to the direction in which the upper surface 3 c of the heat radiating plate 3 extends.

  According to this configuration, since air can flow into the housing 20 from the suction port 23 along the substantially horizontal direction, the axial fan that allows air to flow along the direction in which the rotating shaft of the motor extends extends to the housing. There is no need to increase the height of the housing along the axial direction of the fan as compared to the case where it is arranged on the body. Further, the air inlet 23 and the air outlet 24 so that the air flow generated by the vortex fan 30 flows smoothly from the air inlet 23 to the air outlet 24 in a direction parallel to the direction in which the upper surface 3c of the heat radiating plate 3 extends (substantially horizontal direction). Therefore, the ion generation unit 10 and the lighting fixture 100 can be reduced in size. In addition, the fan of the lighting fixture according to the present invention is not limited to the vortex fan, and other fans such as an axial fan can be applied.

  The luminaire 100 includes a heat sink 3. The heat radiating plate 3 is disposed between the main body 1 and the ion generation unit 10. An opening 29 is formed in the bottom 27 of the housing 20. The bottom 27 constitutes a bottom surface facing the top surface 3 c of the heat radiating plate 3. The opening 29 faces the heat radiating plate 3 and allows the outside and the inside of the housing 20 to communicate with each other by penetrating the bottom portion 27.

  According to this configuration, the airflow flowing through the inside of the housing 20 by the action of the vortex fan 30 passes through the upper surface 3 c of the heatsink 3 through the opening 29, thereby forcibly further cooling the heatsink 3. it can. Moreover, since the magnitude | size of the heat sink 3 can be reduced by promoting the heat radiation by the heat sink 3, the heat sink 3 and the lighting fixture 100 can be reduced in weight. Furthermore, since the opening 29 is formed in the housing | casing 20, the weight of the housing | casing 20 and the ion generation unit 10, and the weight of the lighting fixture 100 can be reduced.

  The luminaire 100 includes a heat sink 3. The heat radiating plate 3 is disposed between the main body 1 and the ion generation unit 10. Around the housing 20, a gap 3 a exists between the heat sink 3 and the bottom surface of the bottom portion 27.

  According to this configuration, since there is a gap 3a between the heat radiating plate 3 and the housing 20, air can be passed through the upper surface 3c of the heat radiating plate 3 positioned around the housing 20, so that the heat radiating plate 3 Can be further cooled. Further, it is possible to prevent the amount of heat released from the heat radiating plate 3 from being conducted to the ion generation unit 10.

  The lighting fixture 100 is a lighting fixture installed on the ceiling, and includes two ion generation units 10. The upper end of each ion generation unit 10 contacts the ceiling. Above the main body 1, the positions of the two ion generation units 10 are symmetric with respect to the center of the main body 1.

  Since the arrangement of the portion where the ceiling and the ion generation unit 10 are in contact with each other can be arranged in a well-balanced manner by the two ion generation units 10 arranged symmetrically above the main body 1, the installation of the lighting device 100 on the ceiling is possible. It can be stabilized. Further, since ions can be emitted from the two ion generation units 10 so as to spread toward the outside of the luminaire 100, the ions can be diffused as a whole in a space such as a room.

  In the luminaire according to the present invention, no gap may be formed between the bottom of the housing and the upper surface of the heat radiating portion. Even if no gap is formed, by forming the opening 29 in the bottom portion 27, the air flow generated inside the housing 20 passes through the upper surface 3 c of the heat radiating plate 3 facing the opening 29, so that heat dissipation can be promoted. However, since the airflow passes through the upper surface 3c of the heat radiating plate 3 positioned around the bottom 27 where the gap 3a is formed, the heat radiation by the heat radiating plate 3 can be further promoted by the gap 3a.

  The number of suction ports 23 formed in the front wall portion 21 of the housing 20 is not particularly limited. The diameter of the suction port 23 may be smaller or larger than the diameter illustrated in FIG. The diameter of the suction port 23 is preferably large enough to allow air to efficiently flow in and prevent dust and the like from flowing into the housing 20. A net-shaped member that is finer than the diameter of the suction port 23 may be attached to the front wall portion 21. Such a net-like member may be attached to the front wall portion 21 so as to close a relatively large opening formed in the front wall portion 21.

  The gap 3a between the bottom portion 27 of the housing 20 and the heat radiating plate 3 is formed by, for example, mounting a pedestal fixed on the heat radiating plate 3 or a leg member extending downward from the bottom portion 27 of the housing 20. It may be formed by being arranged between the bottom portion 27 of 20 and the upper surface of the heat sink 3.

  The openings that allow the outside and the inside of the housing 20 to communicate with each other and that face the heat radiating plate 3 are not limited to the plurality of openings 29 formed in the bottom 27 of the housing 20. One opening that opens in substantially the entire bottom surface of the housing may be formed in the housing. Even when such a single opening is formed, the total number of openings formed in the bottom surface of the housing is not limited to one. The opening on the bottom surface of the housing is a change in the shape of the housing and the heat radiating portion, the position and size of the gap between the heat radiating portion and the housing, and the distribution of pressure inside the housing caused by the rotation of the vortex fan 30. It is preferable to take the above into consideration.

  The position of the ion generating element 50 provided in the ion generating unit 10 may be closer to the air outlet 24 or may be outside the housing 20. However, the position of the ion generating element 50 is preferably downstream of the vortex fan 30 in order to prevent neutralization of positive ions and negative ions.

  In the lighting fixture according to the present invention, the example of the wall portion that adjusts the direction in which the air flowing out from the air outlet flows may be installed downstream of the air outlet of the housing. Such a wall part adjusts the direction where the air which flowed out from the blower outlet flows so that air may flow in the range of 40 degrees or more and 60 degrees or less with respect to a horizontal direction.

  The shape of the heat sink 3 and the outer frame member 2 is not particularly limited. In the lighting fixture according to the present invention, the heat radiating plate as the heat radiating portion may have, for example, a polygonal shape, and the cover member only needs to have a shape along the shape of the heat radiating plate. Thus, in the lighting fixture according to the present invention, the overall shape of the main body is not particularly limited.

  In the lighting fixture according to the present invention, the number of ion generation units is not particularly limited. The number of ion generation units may be one, or may be three or more. When the lighting apparatus includes a plurality of ion generation units, the positions of the plurality of ion generation units may be symmetric with respect to the center of the main body. In this case, it is preferable that two adjacent ion generation units are separated from each other at equal intervals.

  In the lighting fixture 100, the light source is not limited to being an LED. The light source may be any one that emits light, such as a lamp, a fluorescent lamp, or EL (electroluminescence, inorganic or organic). Further, the light source unit 6 or the light source is not limited to being housed in the main body 1. In the luminaire according to the present invention, the main body only needs to include a light source unit or a light source, and the light source unit or the light source may be attached to the main body or exposed to the outside of the luminaire.

  The emission color of the indicator 60 is preferably different from the emission color of the light source unit 6. However, the emission color of the indicator 60 may be the same as the emission color of the light source unit 6.

  The luminaire according to the present invention is not limited to the luminaire installed on the ceiling, but may be any luminaire arranged at the upper part of the room or the like. The luminaire according to the present invention may be a luminaire attached to a wall, or a luminaire placed on a table and placed at the top of a room.

  In the lighting apparatus according to the present invention, the ion generation unit is not limited to the one arranged on the upper surface of the main body, and may be accommodated in the main body.

  The ions generated by the ion generating element are not limited to positive ions and negative ions. Furthermore, the lighting fixture according to the present invention is not limited to the one provided with an ion generating unit including an ion generating element that generates ions, and by charging fine dust in the air, viruses or fungi in the air It is only necessary to provide a device that generates a charged body that can inactivate the like. The charged body here is a general term for ions and charged fine particle water. That is, an example of a charged body different from ions is charged fine particle water.

(Experimental example 1)
As one of the effects of the lighting apparatus according to the present invention, there is an effect that ions can be effectively diffused into a space such as a room. In Experimental Example 1, in order to verify this effect, the lighting apparatus 100 (see FIG. 1) according to the present invention was installed on the ceiling of the room, and the distribution of ions in the room was confirmed.

  FIG. 9 is a schematic diagram showing ion concentration distribution in a room where the lighting apparatus 100 is installed. The lighting fixture 100 was installed in a room having a floor area of 2 L square corresponding to the size of 14 tatami mats. The length L was 2380 mm. The height H from the floor surface to the ceiling in the room was 2400 mm. The lighting fixture 100 was installed in the approximate center of the ceiling. The diameter indicating the width W of the luminaire 100 was 600 mm.

  The ion generation unit 10 (see FIG. 1) was operated for a predetermined time while the light source of the luminaire 100 was turned on in a predetermined dimming state (full lighting). While the ion generation unit 10 generated ions, the vortex fan 30 (see FIG. 6) accommodated in the housing 20 was rotated at 1000 rpm. With respect to the direction in which the ceiling extends so that air is blown out at an angle of approximately 50 ° with respect to the horizontal direction from the outlet 24 (see FIG. 6) of the casing 20 of the ion generation unit 10 in the lighting fixture 100. The angle δ at which air is blown out was adjusted. This angle δ is set to approximately 50 ° by the guide wall 26 of the housing 20 (see FIG. 5).

FIG. 9 shows the distribution of ions in the room after a predetermined time (60 minutes) has elapsed.
As shown in FIG. 9, according to the lighting fixture 100, it is possible to effectively diffuse ions into a space such as a room so that the range of the high concentration distribution is widened from the ceiling toward the floor surface. Was confirmed.

(Experimental example 2)
Another effect of the lighting fixture according to the present invention is that the heat radiating section can be forcibly further cooled, so that the performance of the heat radiating section can be improved. In Experimental Example 2, in order to verify this effect, the cooling effect acting on the heat radiating plate 3 (see FIG. 1) as a heat radiating portion was confirmed.

  In Experimental Example 2, the lighting fixture 100 as an example and the lighting fixture of the comparative example were used. The lighting fixture of the comparative example will be described later.

  First, Experimental Example 2 was performed using the lighting fixture 100 as an example. As Experimental Example 2, the light source is turned on in the lighting fixture 100 (see FIG. 1), and the ion generating unit 10 (see FIG. 1) is operated, thereby cooling the heat sink 3 (see FIG. 1). The effect was confirmed.

  In Experimental Example 2, the temperatures of the heat radiating plates 3 (see FIG. 6) immediately below the housings 20 of the two ion generation units 10 are set to the case where the operation of the vortex fan 30 is stopped and the case where the vortex fan 30 is operated. And measured separately. In Experimental Example 2, the room temperature of the space where the lighting fixture 100 was placed was 26 ° C. or higher and 27 ° C. or lower.

  In Experimental Example 2, first, the light source of the luminaire 100 was completely turned on, while the operations of the ion generation unit 10 and the vortex fan 30 (both see FIG. 6) were stopped. When this state was continued for 150 minutes, the temperatures of the heat radiating plates 3 (see FIG. 6) immediately below the casings 20 of the two ion generation units 10 were measured. The average value of these two temperatures is shown in Table 1.

  As shown in the “0 rpm” column of Table 1, the light source of the luminaire 100 is completely turned on, while the operation of the ion generation unit 10 and the vortex fan 30 (both see FIG. 6) is stopped for 150 minutes. The temperature of the heat sink 3 (see FIG. 6) at that time was 56.3 ° C.

  Subsequently, the light source of the luminaire 100 is turned on while the operation of the ion generation unit 10 and the vortex fan 30 (both see FIG. 6) is stopped for 150 minutes. The operation of the ion generation unit 10 and the vortex fan 30 (both see FIG. 6) was started with all the lights on. At this time, the vortex fan 30 was rotated at 1000 rpm. At the time when 60 minutes passed after the rotation of the vortex fan 30 was started, the temperatures of the heat radiating plates 3 (see FIG. 6) immediately below the housings 20 of the two ion generation units 10 were measured. Table 1 shows the average of these two temperatures.

  As shown in the “1000 rpm” column of the examples in Table 1, the temperature of the heat radiating plate 3 (see FIG. 6) at the time when 60 minutes had elapsed after the rotation of the vortex fan 30 was started was 36.1 ° C. . That is, in the lighting fixture 100, the difference in temperature of the heat sink 3 between the case where the operation of the vortex fan 30 is stopped and the case where the vortex fan 30 is operated was −20.2 ° C. (Example in Table 1). (See the “Difference” column).

  As a comparative example of the lighting fixture 100, a lighting fixture different from the lighting fixture 100 was prepared. The lighting fixture of the comparative example is different from the lighting fixture 100 described above (see FIG. 6) in that the bottom of the casing of the ion generation unit of the lighting fixture of the comparative example has an opening that allows communication between the outside and the inside of the casing. It is not formed, and the outside and inside of the casing are closed at the bottom. Other configurations of the lighting fixture of the comparative example are the same as those of the lighting fixture 100. Therefore, description of these components is omitted, and the same reference numerals as those of the components in the lighting fixture 100 are used below.

  It carried out similarly in parallel with the experiment example 2 with respect to the lighting fixture 100 as an Example using the lighting fixture of a comparative example. That is, when the operation of the vortex fan 30 is stopped and when the vortex fan 30 is operated, the temperatures of the heat radiating plates 3 immediately below the casings 20 of the two ion generation units 10 are changed using the lighting apparatus of the comparative example. And measured separately.

  As shown in the “0 rpm” column of Table 1, the heatsink at the time when the light source of the lighting device of the comparative example was completely turned on while the operation of the ion generation unit 10 and the vortex fan 30 was stopped for 150 minutes. The temperature of 3 was also 56.3 ° C.

  Subsequently, while the light source of the lighting apparatus of the comparative example is completely turned on, the operation of the ion generation unit 10 and the vortex fan 30 is stopped for 150 minutes, and then the light source of the lighting apparatus of the comparative example is fully turned on. The operation of the ion generation unit 10 and the vortex fan 30 was started as it was. At this time, the vortex fan 30 was rotated at 1000 rpm. At the time when 60 minutes passed after the rotation of the vortex fan 30 was started, the temperatures of the heat radiating plates 3 immediately below the casings 20 of the two ion generation units 10 were measured. The average value of these two temperatures is shown in Table 1.

  As shown in the “1000 rpm” column of the comparative example in Table 1, the temperature of the heat sink 3 was 42.6 ° C. after 60 minutes had elapsed since the rotation of the vortex fan 30 was started. That is, in the lighting apparatus of the comparative example, the difference in temperature of the heat sink 3 between when the operation of the vortex fan 30 is stopped and when the vortex fan 30 is operated is −13.7 ° C. (Table 1). (See the “Difference” column in the examples).

  As shown in the difference column of Table 1 above, according to the lighting fixture 100, it was confirmed that the cooling effect acting on the heat sink 3 can be improved.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

C: center, 1: main body, 2a: outer edge, 3: heat sink, 3a: gap, 6: light source unit, 8: louver, 10: ion generating unit, 20: housing, 23: suction port, 24: air outlet , 26: guide wall, 29: opening, 30: vortex fan, 32: motor shaft, 100: lighting fixture

Claims (4)

A body having a light source;
An ion generation unit including a fan, an ion generation device, and a housing that is installed on an upper surface of the main body and accommodates the fan;
The housing has a suction port that allows air to flow into the housing, and a blowout port that releases ions together with air.
The suction port is disposed at an outer edge portion of the main body, and is directed in a substantially horizontal direction so that air flows in a direction from the outer side to the inner side of the upper surface,
The air outlet is directed substantially vertically downward ,
The housing includes a wall portion that adjusts a direction in which the air discharged from the air outlet flows by a surface inclined in a range of 40 ° or more and 60 ° or less with respect to a horizontal direction and is located inside the housing. Having a lighting fixture.   The lighting fixture according to claim 1, wherein the suction port and the air outlet are disposed adjacent to each other in the housing. The fan is a vortex fan that generates an air flow flowing in a direction substantially parallel to the direction in which the upper surface extending in said body, luminaire according to claim 1 or claim 2. The main body radiates heat from the light source, and has a heat radiating portion that forms the upper surface of the main body.
The said housing | casing is a lighting fixture of any one of Claim 1- Claim 3 which has the opening which penetrates the said bottom face in the bottom face facing the said upper surface.

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