JP6646829B2 - Lighting equipment - Google Patents

Description

  The present invention relates to a lighting device attached to a hanging ceiling body provided on a ceiling.

  2. Description of the Related Art Conventionally, a lighting fixture (lighting device) attached to a hanging ceiling body provided on a ceiling and a lighting fixture adapter for attaching the lighting fixture to the hanging ceiling body are known. For example, Patent Literature 1 discloses a lamp mounting adapter that is detachably mounted on a hooking sealing body.

JP 2007-250512 A

  An issue is to reduce the thickness of the lighting device attached to the hanging ceiling body.

  The present invention provides a lighting device that can be easily reduced in thickness.

  A lighting device according to one embodiment of the present invention is a lighting device attached to a hanging ceiling body provided on a ceiling, and includes a light-emitting portion, and a power supply circuit that supplies power for causing the light-emitting portion to emit light to the light-emitting portion. And a first outer surface provided with a concave portion in which the hooking sealing body is disposed, a receiving portion that is located on a side of the concave portion and stores the power supply circuit, and a second external surface opposite to the first outer surface. A housing having a second outer surface, wherein the light emitting unit is attached to the second outer surface.

  According to the present invention, a lighting device that can be easily reduced in thickness is realized.

FIG. 1 is an external perspective view of the lighting device according to Embodiment 1 as viewed from below. FIG. 2 is an external perspective view of the lighting device according to Embodiment 1 as viewed from above. FIG. 3 is an exploded perspective view of the lighting device according to Embodiment 1 as viewed from below. FIG. 4 is an exploded perspective view of the lighting device according to Embodiment 1 as viewed from above. FIG. 5 is a cross-sectional view of the lighting device according to Embodiment 1. FIG. 6 is a cross-sectional view of the lighting device according to Embodiment 2. FIG. 7 is an external perspective view of the mounting adapter according to the second embodiment as viewed from below. FIG. 8 is an external perspective view of the lighting device according to Embodiment 3 as viewed from below. FIG. 9 is a cross-sectional view of a lighting device according to Embodiment 3. FIG. 10 is an external perspective view of the lighting device according to Embodiment 3 further including a globe, as viewed from below.

  Hereinafter, embodiments will be described with reference to the drawings. Each of the embodiments described below shows a comprehensive or specific example. Numerical values, shapes, materials, constituent elements, arrangement positions of constituent elements, connection forms, and the like shown in the following embodiments are merely examples, and do not limit the present invention. In addition, among the components in the following embodiments, components not described in the independent claims indicating the highest concept are described as arbitrary components.

  Each drawing is a schematic diagram, and is not necessarily strictly illustrated. In each of the drawings, substantially the same components are denoted by the same reference numerals, and redundant description may be omitted or simplified.

  In the following embodiments, the Z-axis direction is, for example, a vertical direction, and the + Z-axis side may be described as an upper side (upper side) or an installation surface side. Further, the Z-axis side may be described as a lower side (lower side) or a light emission side. The X-axis direction and the Y-axis direction are directions orthogonal to each other on a plane (horizontal plane) perpendicular to the Z-axis.

(Embodiment 1)
[Constitution]
First, the configuration of the lighting device according to Embodiment 1 will be described. FIG. 1 is an external perspective view of the lighting device according to Embodiment 1 as viewed from below. FIG. 2 is an external perspective view of the lighting device according to Embodiment 1 as viewed from above. FIG. 3 is an exploded perspective view of the lighting device according to Embodiment 1 as viewed from below. FIG. 4 is an exploded perspective view of the lighting device according to Embodiment 1 as viewed from above. FIG. 5 is a cross-sectional view of the lighting device according to Embodiment 1.

  The lighting device 10 according to the first embodiment is attached to a hooking sealing body 20 (shown in FIGS. 3 and 5) provided on a ceiling by being rotated around a Z axis, and is a ceiling mainly illuminating a lower portion. Light. The planar shape (the shape viewed from the Z-axis direction) of the illumination device 10 is a circle. As shown in FIGS. 1 to 5, the lighting device 10 includes a housing 30, a light emitting module 60, a cover 70, and a power supply circuit 80.

  The housing 30 is a flat substantially columnar (substantially flat) member. The upper surface 31 of the housing 30 (shown in FIGS. 2 and 4) is an example of a first outer surface. The upper surface 31 is provided with a concave portion 33 in which the hanging ceiling body 20 is arranged when the lighting device 10 is attached to the hanging ceiling body 20. The lower surface 32 (illustrated in FIG. 3) of the housing 30 is an example of a second outer surface. The light emitting module 60 is attached to the lower surface 32.

  More specifically, the housing 30 includes a mounting adapter 40 and an instrument body 50. In plan view, the outer shape of the mounting adapter 40 and the outer shape of the instrument body 50 match. The housing 30 is formed of, for example, a resin material such as PBT (polybutylene terephthalate), but may be formed of a metal material. Further, the mounting adapter 40 and the instrument body 50 may be formed of different materials.

  The concave portion 33 is a portion of the upper surface of the housing 30 that is recessed along the outer shape of the hooking sealing body 20, and also functions as a guide when attaching the housing 30 to the hooking sealing body 20.

  The attachment adapter 40 is an example of a first member, and is a member for attaching the instrument body 50 to the hooking sealing body 20. The attachment adapter 40 is attached to the hooking sealing body 20 before the instrument body 50, and then the instrument body 50 is attached to the attachment adapter 40. When each of the two terminals 46 provided on the upper surface of the plate-like portion 45 is inserted into the wide portion of the terminal hole 21 of the hooking sealing body 20, the mounting adapter 40 is rotated around the Z-axis. The mounting adapter 40 is mounted on the hanging sealing body 20.

  The planar shape of the mounting adapter 40 is a circle having a larger diameter than the hooking sealing body 20. Specifically, the mounting adapter 40 includes a base 41, a cylindrical portion 42, and a plate-like portion 45.

  The base portion 41 is a peripheral portion of the mounting adapter 40 and a portion to which the instrument body 50 is mounted. The base 41 has a substantially annular plate shape, and is provided with two mounting holes 47 for mounting the instrument body 50. The mounting holes 47 (portions of the base 41 where the mounting holes 47 are formed) are an example of a mounting portion. The terminal 51 of the instrument body 50 is inserted into the mounting hole 47.

  Although not shown, a metal member electrically connected to the terminal 46 is disposed near the mounting hole 47. When the terminal 51 is inserted into the mounting hole 47, the terminal 51 comes into contact with the metal member. Thereby, the terminal 46 and the terminal 51 are electrically connected.

  The cylindrical portion 42 is a cylindrical portion formed at the central portion of the mounting adapter 40, and stands upright on the lower surface of the base 41 along a circular opening formed by the base 41. Further, the cylindrical portion 42 forms a side surface of the concave portion 33.

  The plate-shaped portion 45 is a long plate-shaped member that closes a part of an opening formed at a lower end of the cylindrical portion 42. By providing the plate-shaped portion 45 at the lower end of the cylindrical portion, two openings 44 are formed at the lower end of the cylindrical portion 42.

  On the upper surface of the plate portion 45, two metal terminals 46 are provided. The plate-like portion 45 is, in other words, a part of the bottom surface of the concave portion 33. The terminal 46 has an L-shaped cross section, and when the terminal 46 is inserted into the terminal hole 21, the terminal 46 is hooked on the edge of the narrow portion of the terminal hole 21. With such terminals 46, the mounting adapter 40 and the hooking sealing body 20 are electrically and mechanically connected.

  The opening 44 is a part of the mounting adapter 40 that forms a substantially semicircular opening. The opening 44 is provided in the mounting adapter 40 so that the hooking sealing body 20 can be visually recognized from below when the mounting adapter 40 is mounted on the hooking sealing body 20.

  Since the mounting adapter 40 is larger than the hooking sealing body 20, without the opening 44, the user cannot visually recognize the position of the hooking sealing body 20 from below when the mounting adapter 40 is mounted. In other words, if the opening 44 is provided, the user can visually recognize the position of the hooking sealing body 20 from below when the mounting adapter 40 is mounted, and the mounting adapter 40 can be easily mounted.

  Note that, in plan view, the outer shape of the device main body 50 is substantially the same as the outer shape of the mounting adapter 40. For this reason, the attachment of the device main body 50 to the attachment adapter 40 is easy because the attachment adapter 40 is difficult to be hidden from below. From the viewpoint of such attachment, the outer shape of the device main body 50 is preferably equal to or less than the outer shape of the mounting adapter 40.

  The appliance body 50 is a hollow member in which the power supply circuit 80 is housed. The outer shape of the device main body 50 is a flat substantially columnar shape (substantially flat shape), and a central portion of the upper surface of the device main body 50 is recessed corresponding to the cylindrical portion 42.

  Two nail-shaped terminals 51 are provided on the upper surface of the device main body 50 and on a non-recessed portion (peripheral portion). The terminal 51 is made of metal. When the terminal body 51 is inserted into the wide portion of the mounting hole 47, the device main body 50 is rotated around the Z axis, so that the device main body 50 is mounted on the mounting adapter 40. The power supply circuit 80 is electrically connected to the terminal 51.

  Although not shown, when the instrument body 50 is attached to the attachment adapter 40, the instrument body 50 and the attachment adapter 40 are electrically connected by the terminal 51. As described above, when the mounting adapter 40 is mounted on the hooking sealing body 20, the hooking sealing body 20 and the mounting adapter 40 are electrically connected by the terminals 46. Therefore, the AC power supplied through the hooking sealing body 20 is supplied to the power supply circuit 80 through the terminals 46 and 51.

  As shown in FIG. 5, an accommodating portion 34 that forms a space for accommodating the power supply circuit 80 is provided inside the peripheral portion of the instrument body 50. The accommodating portion 34 forms a donut-shaped space surrounding the concave portion 33 from the periphery, and accommodates the power supply circuit 80. The accommodating portion 34 has only to form a space capable of accommodating the power supply circuit 80, and does not need to form a donut-shaped space. The storage section 34 may be located on the side of the recess 33.

  As described above, since the accommodating portion 34 is located on the side of the concave portion 33 in which the hooking sealing body 20 is arranged, the power supply circuit 80 can be arranged using a space generated by the thickness of the hooking sealing body 20. . Therefore, it is possible to suppress the lighting device 10 from protruding from the ceiling.

  Further, heat generated in the power supply circuit 80 is easily released to the outside of the housing 30 as compared with a configuration in which the power supply circuit 80 is disposed in a central portion in the housing 30. Therefore, there is an advantage that the heat dissipation of the power supply circuit 80 can be improved.

  Although not shown accurately in FIGS. 1 to 5, the appliance main body 50 is provided with an opening for accommodating the power supply circuit 80 in the accommodating portion 34 (and a lid for closing the opening or the like).

  The light emitting module 60 is attached to the lower surface of the device main body 50 (the lower surface 32 of the housing 30). The light emitting module 60 has a substrate 61 and a plurality of light emitting elements 62 mounted on the substrate 61. The light emitting module 60 is an example of a light emitting unit, is attached to the lower surface 32 of the housing 30, and functions as a light source of the lighting device 10. The light emitting module 60 emits light by DC power supplied from the power supply circuit 80.

  The substrate 61 is a substrate having a smaller diameter than the housing 30 and a circular shape in plan view. The substrate 61 is provided between the housing 30 (the tool body 50) and the cover 70. The substrate 61 is formed of, for example, a material having electrical insulation such as a ceramic or a heat conductive resin.

  The upper surface of the substrate 61 is in contact with (surface contact with) the lower surface 32 of the housing 30, and heat generated by light emission of the light emitting element 62 is conducted to the housing 30. Note that a heat sink may be provided between the upper surface of the substrate 61 and the lower surface 32 of the housing 30. Further, a heat dissipating member such as a heat dissipating sheet or heat dissipating grease may be provided between the upper surface of the substrate 61 and the lower surface 32 of the housing 30. An adhesive may be provided between the upper surface of the substrate 61 and the lower surface 32 of the housing 30 to adhere the substrate 61 to the appliance body 50.

  On the lower surface of the substrate 61, a metal film made of aluminum, copper, or the like is patterned. Specifically, the metal film is a wiring for supplying power to the light emitting element 62. In addition to the wiring, the metal film has a metal film for light reflection for efficiently emitting light emitted from the light emitting element 62 downward, and a heat dissipating metal film for efficiently dissipating heat generated by the light emitting element 62. A metal film or the like may be included. Further, the metal film may be provided also on the upper surface of the substrate 61.

  The light emitting element 62 is a surface mount device (SMD type) LED element that emits white light, and a plurality of light emitting elements 62 are provided on the lower surface of the substrate 61. The plurality of light emitting elements 62 are radially arranged on the lower surface of the substrate 61. The surface mount type LED element is a package type LED element in which an LED chip is mounted in a resin molded cavity and a phosphor-containing resin is sealed in the cavity. The main emission direction of light of each of the plurality of light emitting elements 62 is downward.

  A terminal portion (not shown) for electrically connecting the light emitting module 60 and the above-described power supply circuit 80 is provided on the lower surface of the substrate 61. The plurality of light emitting elements 62 are connected to the power supply circuit 80 (FIG. 5). The light is emitted by DC power supplied from a DC power supply (shown schematically in FIG. 1). The terminal portion and the power supply circuit 80 are electrically connected, for example, by a lead wire inserted into an opening (not shown) provided in the lower surface 32.

  The cover 70 is a disk-shaped optical member (globe). The cover 70 has translucency and covers the lower surface (light emission side) of the light emitting module 60 (substrate 61). The cover 70 is attached to the lower side of the housing 30 (the tool body 50).

The cover 70 is formed of, for example, a translucent material such as a silicone resin, an acrylic resin, a polycarbonate resin, and glass. The cover 70 may be formed of a white resin containing a light diffusing material (fine particles) such as silica or calcium carbonate and may have a light diffusing property. The power supply circuit 80 is supplied through the hooking sealing body 20. The AC power is converted into DC power suitable for the operation of the light emitting module, and the DC power is supplied to the light emitting module 60. The power supply circuit 80 and the light emitting module 60 are electrically connected by a lead wire (not shown) or the like.

  The power supply circuit 80 is, specifically, a circuit module in which circuit components are mounted on a substrate. The power supply circuit 80 includes, for example, an AC-DC converter circuit, a DC-DC converter circuit, and the like. Specifically, the circuit components constituting the power supply circuit 80 include a capacitance element such as an electrolytic capacitor or a ceramic capacitor, a resistance element, a coil element, a choke coil (choke transformer), a noise filter, and a diode or an integrated circuit element. It is a semiconductor element or the like.

[Effects]
The lighting device 10 described above is a lighting device attached to the hanging ceiling body 20 provided on the ceiling. The lighting device 10 includes a light emitting module 60, a power supply circuit 80 that supplies power for causing the light emitting module 60 to emit light to the light emitting module 60, and the housing 30.

  The housing 30 has an upper surface 31 provided with a concave portion 33 in which the hooking sealing body 20 is disposed, a housing portion 34 located on the side of the concave portion 33 for housing the power supply circuit 80, and a lower surface opposite to the upper surface 31. The light-emitting module 60 is attached to the lower surface 32. The light emitting module 60 is an example of a light emitting unit, the upper surface 31 is an example of a first outer surface, and the lower surface 32 is an example of a second outer surface. The first outer surface and the second outer surface are flat surfaces facing each other.

  As described above, since the accommodating portion 34 is located on the side of the concave portion 33 in which the hooking sealing body 20 is arranged, the power supply circuit 80 can be arranged using a space generated by the thickness of the hooking sealing body 20. Therefore, it is possible to suppress the lighting device 10 from protruding from the ceiling. In other words, the lighting device 10 that can be easily thinned is realized.

  Further, heat generated in the power supply circuit 80 is easily released to the outside of the housing 30 as compared with a configuration in which the power supply circuit 80 is disposed in a central portion in the housing 30. Therefore, there is an advantage that the heat dissipation of the power supply circuit 80 can be improved.

  Further, the housing 30 may include a mounting adapter 40 including the upper surface 31 and a device main body 50 including the lower surface 32 and the housing portion 34.

  Accordingly, the user can divide the housing 30 into the adapter 40 and the tool body 50 and attach the housing 30 to the hooking sealing body 20.

  The configuration in which the housing 30 includes the adapter 40 and the instrument body 50 also has an advantage that a lock mechanism can be easily provided.

  The lock mechanism has a detection mechanism for detecting that the terminal 46 is in a predetermined state inserted into the predetermined position of the terminal hole 21, and the detection mechanism is usually provided near the terminal 46. The lock mechanism locks the adapter 40 so that the adapter 40 cannot be removed from the hooking sealing body 20 when the predetermined state is detected by the detection mechanism. In this state, the user cannot remove the adapter 40 from the hooking sealing body 20 without pressing the push button of the lock mechanism.

  As described later, when the housing is formed by one member, the push button needs to be arranged on the outer surface of the housing. Since the outer surface of the housing is far from the detection mechanism, the structure of the lock mechanism is complicated. On the other hand, in a configuration in which the housing 30 includes the adapter 40 and the instrument main body 50, a push button can be arranged on the adapter 40. That is, since the push button can be arranged near the detection mechanism, the structure of the lock mechanism can be simplified.

  Further, the mounting adapter 40 may have an opening 44 for visually recognizing the hooking sealing body 20 from the opposite side of the upper surface 31.

  This facilitates alignment of the hooking sealing body 20 when the mounting adapter 40 is mounted. That is, the user can easily attach the attachment adapter 40 to the hooking sealing body 20. Further, since the opening 44 is covered by the appliance main body 50, the opening 44 can be hidden if the appliance main body 50 is attached later.

  Further, the mounting adapter 40 may have a mounting hole 47 around the concave portion 33 for mounting the instrument body 50 to the mounting adapter 40. The mounting hole 47 is an example of a mounting portion.

  Since the mounting hole 47 is provided on the periphery of the concave portion, the user can easily view the mounting hole 47. That is, the user can easily attach the appliance body 50 to the attachment adapter 40. Further, since the opening 44 is covered by the appliance main body 50, the opening 44 can be hidden if the appliance main body 50 is attached later.

  Further, the concave portion 33 may be a portion of the housing 30 that is concave along the hooking sealing body 20.

  Thereby, the concave portion 33 functions as a guide when the lighting device 10 is attached to the hanging ceiling body 20. That is, the user can easily attach the lighting device 10 to the hooking sealing body 20 by using the concave portion 33 as a guide.

  Further, a terminal 46 that is hooked on the hooking sealing body 20 may be provided on the bottom surface of the concave portion 33.

  Thus, the lighting device 10 can be attached to the hanging ceiling body 20 by hooking the housing 30 to the hanging ceiling body 20.

(Embodiment 2)
[Constitution]
In the first embodiment, the housing 30 is provided with the housing portion 34 in the instrument body 50, but the housing portion 34 may be provided in the mounting adapter 40. Hereinafter, the configuration of the lighting device according to Embodiment 2 will be described. Note that, in the following second embodiment, detailed description of components substantially the same as the components described in the first embodiment may be omitted.

  FIG. 6 is a cross-sectional view of the lighting device according to Embodiment 2. FIG. 7 is an external perspective view of the mounting adapter according to the second embodiment as viewed from below.

  As shown in FIG. 6, the lighting device 10a according to the second embodiment includes a housing 30a, a light emitting module 60, a cover 70, and a power supply circuit 80.

  The housing 30a is a flat substantially columnar (substantially flat) member. On the upper surface of the housing 30a, a concave portion 33a in which the hooking sealing body 20 is arranged is provided. The light emitting module 60 is mounted on the lower surface of the housing 30a. More specifically, the housing 30a includes a mounting adapter 40a and an instrument body 50a.

  As shown in FIGS. 6 and 7, the mounting adapter 40 a is an example of a first member, and is a member for mounting the device main body 50 a to the hooking sealing body 20. The external shape of the mounting adapter 40a is a flat, substantially cylindrical shape (substantially flat shape), and a concave portion 33a is provided in the center of the upper surface of the instrument body 50a.

  An accommodating portion 34a that forms a space for accommodating the power supply circuit 80 is provided inside the peripheral portion (portion where the concave portion 33a is not provided) of the mounting adapter 40a. The accommodating portion 34a forms a donut-shaped space surrounding the concave portion 33a from around, and accommodates the power supply circuit 80. The accommodating portion 34a only needs to form a space capable of accommodating the power supply circuit 80, and does not need to form a donut-shaped space. The storage section 34a may be located on the side of the recess 33a.

  As described above, since the accommodating portion 34a is located on the side of the concave portion 33a in which the hooking sealing body 20 is arranged, the power supply circuit 80 can be arranged using a space generated by the thickness of the hooking sealing body 20. . Therefore, it is possible to suppress the lighting device 10a from protruding from the ceiling.

  As in the case of the mounting adapter 40, the mounting adapter 40a is partially provided with a plate-like portion 45 as a bottom surface of the concave portion 33a, thereby forming two openings 44a. In addition, two terminals 46 for attaching the attachment adapter 40 a to the hooking sealing body 20 are provided on the upper surface of the plate-like portion 45.

  According to the opening 44a, the user can visually recognize the position of the hooking sealing body 20 from below when attaching the attachment adapter 40a, and can easily attach the attachment adapter 40a.

  The device main body 50a is an example of a second member, and is a substantially circular plate-shaped member. The light emitting module 60 is attached to the lower surface of the device main body 50a. Two terminals 51 used for attaching the appliance main body 50a to the attachment adapter 40a are provided on a peripheral portion of the upper surface of the appliance main body 50a.

[Effects]
As described above, the housing 30a included in the lighting device 10a includes the mounting adapter 40a including the upper surface of the housing 30a and the housing portion 34a, and the fixture body 50a including the lower surface of the housing 30a.

  This allows the user to attach the housing 30a to the hooking sealing body 20 separately from the adapter 40a and the appliance body 50a.

  Note that, similarly to the case 30, the structure in which the case 30a includes the adapter 40a and the instrument body 50a also has an advantage that the above-described lock mechanism can be easily provided.

(Embodiment 3)
[Constitution]
In the first and second embodiments, the housing is composed of two members, the mounting adapter and the instrument body, and these two members are separately mounted. Here, the housing may be formed by one member that is attached to the hooking sealing body 20 at a time. Hereinafter, the configuration of the lighting device according to the third embodiment will be described. In the following second embodiment, detailed descriptions of components substantially the same as those described in the first or second embodiment may be omitted.

  FIG. 8 is an external perspective view of the lighting device according to Embodiment 3 as viewed from below. FIG. 9 is a cross-sectional view of a lighting device according to Embodiment 3.

  As shown in FIGS. 8 and 9, the lighting device 10b according to the third embodiment includes a housing 30b, a light emitting module 60b, a cover 70b, and a power supply circuit 80.

  The housing 30b is a flat substantially columnar (substantially flat) member. On the upper surface of the housing 30b, a concave portion 33b in which the hooking sealing body 20 is arranged is provided. The light emitting module 60b is attached to the lower surface of the housing 30b.

  An accommodation portion 34b that forms a space for accommodating the power supply circuit 80 is provided inside a peripheral portion (a portion where the concave portion 33b is not provided) of the housing 30b. The accommodating portion 34b forms a donut-shaped space surrounding the concave portion 33b from around and accommodates the power supply circuit 80. The accommodating portion 34b only needs to form a space capable of accommodating the power supply circuit 80, and does not need to form a donut-shaped space. The accommodation portion 34b may be located on the side of the concave portion 33b.

  As described above, since the accommodating portion 34b is located on the side of the concave portion 33b in which the hooking sealing body 20 is arranged, the power supply circuit 80 can be arranged using the space generated by the thickness of the hooking sealing body 20. . Therefore, it is possible to suppress the lighting device 10b from protruding from the ceiling.

  In the housing 30b, a plate-like portion 35b is partially provided as a bottom surface of the concave portion 33a, and thereby two openings 44b are formed. It should be noted that two terminals 46 for attaching the housing 30b to the hooking sealing body 20 are provided on the upper surface of the plate-shaped portion 35b.

  Unlike the light emitting module 60, the light emitting module 60b has an annular plate-shaped substrate and a plurality of light emitting elements mounted on the substrate. In a plan view, the light emitting module 60b is annular, and is attached to the lower surface of the housing 30b so as to surround the opening 44b.

  Similarly, unlike the cover 70, the cover 70b has an annular plate shape. In plan view, the cover 70b is annular, and is attached to the lower surface of the housing 30b so as to surround the opening 44b.

  In this manner, if the light emitting module 60b and the cover 70b are mounted so as to surround the opening 44b, the user can visually recognize the position of the hooking sealing body 20 from below when the lighting device 10b is mounted. That is, the user can easily mount the mounting adapter 40a.

  It is preferable that the opening 44b be covered after the lighting device 10b is attached to the hanging ceiling body 20 in appearance. In the lighting device 10b including the annular light-emitting module 60b, the brightness of the central portion may be insufficient. Therefore, after the lighting device 10b is attached to the hanging ceiling body 20, a glove may be further attached from below. FIG. 10 is an external perspective view of the lighting device 10b further provided with a globe as viewed from below.

  The globe 90 shown in FIG. 10 is an optical member that covers the opening 44b and the light emitting module 60b (the cover 70b) from below. It has a cylindrical portion 91 surrounding the housing 30b from the outside in a plan view, and a disk portion 92 facing the cover 70b and located below the cylindrical portion 91. The diameter of the disk portion 92 is slightly larger than the diameter of the cylindrical portion 91.

  The globe 90 is formed of, for example, a translucent material such as a silicone resin, an acrylic resin, a polycarbonate resin, and glass. Further, the globe 90 preferably has a light diffusing property from the viewpoint of compensating for the lack of brightness of the central portion. In this case, the globe 90 is formed of, for example, a white resin containing a light diffusing material (fine particles) such as silica or calcium carbonate.

[Effects]
As described above, the housing 30b of the lighting device 10b has the opening 44b for visually recognizing the hooking sealing body 20 from the lower surface side.

  This facilitates the positioning of the hooking sealing body 20 when the lighting device 10b is attached.

  In the lighting device 10b, the light emitting module 60b may be annular, and may be attached to the lower surface of the housing 30b so as to surround the opening 44b.

  Accordingly, since the opening 44b is not covered by the light emitting module 60b, the positioning of the hooking sealing body 20 at the time of mounting the lighting device 10b becomes easy.

(Other embodiments)
The lighting device according to the embodiment has been described above, but the present invention is not limited to such an embodiment.

  For example, in the first and second embodiments, the mounting hole is provided in the mounting adapter, and the terminal inserted into the mounting hole is provided in the instrument body. However, the mounting hole may be provided in the instrument body, and the terminal inserted into the mounting hole may be provided in the mounting adapter.

  Further, in the above embodiment, the SMD type light emitting module is used as an example of the light emitting unit, but the mode of the light emitting unit is not particularly limited. For example, a COB (Chip On Board) type light emitting module in which an LED chip is directly mounted on a substrate may be used as the light emitting unit. Further, instead of the light emitting module using the LED, a light emitting module configured using a solid light emitting element other than the LED such as an organic EL element (OLED) or an inorganic EL element may be used as the light emitting unit.

  Further, in the above embodiment, the shape of the hooking sealing body is substantially cylindrical with a bottom. However, the shape of the hooking sealing body is not limited to such a shape, and may be other shapes. Is also good.

  As described above, the lighting device according to one or more aspects has been described based on the embodiments. However, the present invention is not limited to the embodiments. Unless departing from the gist of the present invention, various modifications conceivable by those skilled in the art may be applied to this embodiment, and a form constructed by combining components in different embodiments may be in the scope of one or more aspects. May be included within.

10, 10a, 10b Lighting device 20 Hook ceiling body 30, 30a, 30b Housing 31 Upper surface (first outer surface)
32 lower surface (second outer surface)
33, 33a, 33b Recess 34, 34a, 34b Housing 40, 40a Adapter (first member)
44, 44a, 44b Opening 47 Mounting hole (mounting part)
50, 50a Instrument body (second member)
60, 60b Light emitting module (light emitting unit)
80 Power supply circuit

Claims (8)

A lighting device attached to a hanging ceiling body provided on a ceiling,
A light emitting unit,
A power supply circuit for supplying power for causing the light emitting unit to emit light to the light emitting unit;
A first outer surface provided with a concave portion in which the hooking sealing body is arranged, a receiving portion that is located on a side of the concave portion and stores the power supply circuit, and a second side opposite to the first outer surface; A housing having an outer surface, the light emitting unit being attached to the second outer surface ,
The lighting device , wherein a bottom surface of the housing portion is located closer to the ceiling than a bottom surface of the recess . The housing is
A first member including the first outer surface,
The lighting device according to claim 1, further comprising a second member including the second outer surface and the housing portion. The housing is
A first member including the first outer surface and the housing portion,
The lighting device according to claim 1, further comprising a second member including the second outer surface. The lighting device according to claim 2, wherein the first member has an opening for visually recognizing the hooking sealing body from a side opposite to the first outer surface. The lighting device according to any one of claims 2 to 4, wherein the first member has a mounting portion around the concave portion for mounting the second member to the first member. The lighting device according to claim 1, wherein the housing has an opening for visually recognizing the hooking sealing body from the second outer surface side. The lighting device according to claim 6, wherein the light emitting unit is annular, and is attached to the second outer surface so as to surround the opening. The lighting device according to any one of claims 1 to 7, wherein the recess is a portion of the housing that is recessed along the hooking sealing body.

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