JP6417609B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture.

  In recent years, various lighting fixtures (ceiling lights) attached to a ceiling using LEDs (Light Emitting Diodes) having advantages such as low power consumption and long life as a light source have been proposed (for example, Patent Document 1). reference).

  Patent Document 1 discloses a circular lighting fixture (ceiling light) using an LED as a light source. The lighting fixture of patent document 1 is provided with the some LED element mounted in the LED element mounting board | substrate as a light source. The LED element mounting board is provided on a substantially circular heat radiating plate having a hat-shaped longitudinal section. On the back side of the heat radiating plate, a substantially circular main body base as a member closest to the ceiling side and a lighting circuit board disposed between the main body base and the heat radiating plate are provided. The lighting fixture of Patent Document 1 is connected to an external power source and fixed at a predetermined position on the ceiling surface through an attachment adapter that engages with an indoor wiring component such as a hook ceiling provided on the ceiling surface of the house. It is configured.

JP 2013-48167 A

  The lighting fixture disclosed in Patent Document 1 is a circular ceiling-mounted lighting fixture in which a lamp body portion of a lighting fixture is directly attached to a ceiling without a support member such as a bracket, and the flat back surface of the lighting fixture The side (the main body base of Patent Document 1) is attached close to the ceiling. Therefore, the air flow tends to stay between the ceiling surface and the lighting fixture. That is, the lighting fixture of Patent Document 1 has a problem that heat released from the lighting fixture to the ceiling surface side (back side of the lighting fixture) is likely to be trapped in the central portion on the rear side of the lighting fixture, and heat dissipation is poor.

  Therefore, the present invention has been made in view of the above problems, and is a lighting fixture that uses an LED as a light source, which suppresses the retention of air flow between the ceiling surface and the lamp body, and provides good heat dissipation. It aims at providing the lighting fixture which has property.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, the lighting fixture disclosed in this application is
A lighting fixture attached to a surface to be attached,
A lamp body,
A power supply for supplying power to the lamp body;
A mounting portion for mounting the lighting fixture on the mounted surface;
An arm part having an arm member and an arm cover covering the irradiation surface side of the arm member ;
The power supply unit is disposed so as to overlap the lower part of the attachment unit,
And the lamp body and the power supply unit is coupled through the arm portion,
A space is provided between the lamp body and the power source.

In the lighting fixture disclosed in the present application,
In the arm part,
It is preferable that the power supply unit side end of the arm unit coupled to the power supply unit side is disposed above the lamp body side end of the arm unit coupled to the lamp main unit side.

In the lighting fixture disclosed in the present application,
It is preferable that the arm portion is inclined downward from the lighting fixture as it goes from the power source portion side to the lamp body side.

In the lighting fixture disclosed in the present application,
The outer shape of the lamp body is preferably a hollow shape.

In the lighting fixture disclosed in the present application,
It is preferable that the power supply unit and the attachment unit are arranged at the center of the lamp body.

In the lighting fixture disclosed in the present application,
Operation by remote control signal is possible,
The power supply unit includes a receiving unit that receives the remote control signal,
The receiving unit is preferably arranged at the bottom of the power supply unit.

In the lighting fixture disclosed in the present application,
The power supply unit preferably includes a channel changeover switch for the remote control signal on a side part.

  According to the present invention, since there is a space between the lamp main body and the power supply unit, it is possible to suppress heat flow from staying between the lamp main body and the ceiling surface, and to improve heat dissipation.

The perspective view which looked at the lighting fixture which concerns on 1st Embodiment of this invention from diagonally downward. Similarly the perspective view which looked at the lighting fixture from diagonally upward. Similarly the top view which looked at the lighting fixture from the upper part. The top view which similarly looked at the lighting fixture (state without a shade) from the downward direction. The AA sectional view taken on the line in FIG. 3 which similarly shows a lighting fixture. The expanded sectional view which shows the lamp main body of the lighting fixture in FIG. The BB sectional view taken on the line in FIG. 4 which shows the vicinity of a power supply part. The disassembled perspective view which similarly looked at the lighting fixture from diagonally upward. Similarly the exploded perspective view which looked at the lighting fixture from diagonally downward. The perspective view which looked at the lighting fixture which concerns on 2nd Embodiment of this invention from diagonally downward. The top view which looked at the lighting fixture which concerns on 2nd Embodiment from upper direction. The side view which shows the lighting fixture which concerns on 2nd Embodiment.

  The lighting fixture 11 which concerns on 1st Embodiment of this invention is demonstrated using FIGS. 1-9. The lighting fixture 11 according to the present embodiment is a lighting fixture that uses a plurality of LEDs 53 (see FIG. 4) as light sources. As shown in FIG. 5, the luminaire 11 is a ceiling light that is attached to a hook ceiling 100 that is a wiring component provided on a ceiling surface C that is a surface to be attached. In the following description, the light irradiation side of the lighting fixture 11 is the irradiation surface side of the lighting fixture 11 (the floor side when the lighting fixture 11 is attached to the ceiling surface C), and the opposite side of the irradiation side. The side facing the ceiling surface C in the luminaire 11 will be described as the mounting surface side of the luminaire 11 (the ceiling side when the luminaire 11 is attached to the ceiling surface C). Moreover, the up-down direction of the lighting fixture 11 is demonstrated as an up-down direction in the state in which the lighting fixture 11 was installed in the ceiling surface C (up-down direction in FIG. 5). In addition, a description will be given assuming that the direction perpendicular to the vertical direction is the radial direction. Moreover, in description of this embodiment, let the state which looked at the lighting fixture 11 grade | etc., From the downward direction be planar view. A state in which the luminaire 11 and the like are viewed from a direction orthogonal to the vertical direction is referred to as a side view. A state in which the cross-sectional shape of the lighting fixture 11 or the like is viewed is taken as a cross-sectional view.

  As illustrated in FIGS. 1 and 2, the lighting fixture 11 includes a ring-shaped lamp body 21, an arm portion 41, a power supply portion 61, and an attachment portion 71. The lamp body 21 is supported by the mounting portion 71 via a plurality of arm portions 41.

The lamp body 21 is a portion (light emitting unit) that emits light from the lighting fixture 11. The lamp body 21 mainly includes a base 31, a light source 51, a shade 81, and a cover 91. As shown in FIG. 3, the lamp body 21 is an annular shape having a predetermined width in a plan view, and has a hollow shape. The lamp body 21 is supported by a plurality of arm portions 41 that extend radially outward from the mounting portion 71 with the mounting portion 71 at the center. As shown in FIG. 5, the lamp body 21 is attached to the ceiling surface C via a plurality of arm portions 41 and attachment portions 71. The lamp body 21 has a predetermined distance D between the upper end and the ceiling surface C as a vertical distance. The lamp body 21 and the power source 61 are coupled via the arm 41 and the attachment 71.
In addition, in this embodiment, although the planar view shape in the lamp main body 21 is made into the annular | circular shape which has predetermined width, it does not specifically limit. For example, an elliptical shape, a triangular shape, a quadrangular shape, or a polygonal hollow shape having a predetermined width in a plan view can be used. Moreover, not only a hollow shape but the shape which has the some lamp main body 21 may be sufficient.

  The base 31 is a substantially annular plate-like member having a predetermined width in the radial direction in plan view. The base portion 31 of the present embodiment forms a substantially annular shape by combining a plurality (three in the present embodiment) of arc-shaped plate-like members having a predetermined width. You may form from this plate-shaped member. The base 31 is formed using a metal material such as an aluminum alloy having a high thermal conductivity. The base 31 holds the light source 51, the shade 81, and the cover 91, and one end of an arm member 42 included in the arm 41 is attached to the base 31. The base 31 includes a light source mounting part 32, a light source fixing part 33, an arm fixing part 34, and a cover fixing part 35. The light source attachment portion 32 is a flat surface on the irradiation surface side of the base portion 31 and is a portion for attaching and attaching a plurality of module substrates 54. Further, the surface on the irradiation surface side of the light source mounting portion 32 has a function of a reflection surface that reflects light emitted from the LED 53. The light source fixing portion 33 is a screw hole for screwing the screw member 59 provided in the light source mounting portion 32 in order to fix the light source portion 51 (module substrate 54) with the screw member 59. In addition, the light source fixing | fixed part 33 can also ensure long the length of the screwing part with the screw member 59 by forming by burring process, for example. The arm fixing portion 34 is a screw hole for screwing the screw member provided in the base 31 in order to fix one end of the arm member 42 of the arm portion 41 with the screw member. A plurality of cover fixing portions 35 are provided in the vicinity of the outer peripheral edge of the light source mounting portion 32 (three in the present embodiment) and at substantially equal intervals in the circumferential direction. The cover fixing portion 35 is a screw hole for screwing the screw member 93 provided in the light source attachment portion 32 in order to fix the cover 91 with the screw member 93. The base portion 31 is interposed between one end of the arm cover 43 of the arm portion 41 and the shade 81, and the screw attachment portion 43c of the arm cover 43 and the screw attachment portion 82a of the shade 81 are connected by the screw member 49. Screwed together. Thereby, the shade 81 is fixed to the irradiation surface side of the base 31. The base 31 has a function as a heat sink. Therefore, the light source mounting portion 32 is formed flat so that the contact area with the module substrate 54 is widened, and the heat generated from the LED 53 is generated from the module substrate 54 by attaching the module substrate 54 in close contact with the light source mounting portion 32. Conducted to 31 light source mounting portions 32. The heat transmitted to the base portion 31 is further conducted to the arm portion 41, the shade 81, and the cover 91 that are in contact with the base portion 31, and can be radiated from the respective members to the surrounding air.

  The base 31 is a predetermined made of a metal material such as an aluminum alloy in consideration of the strength for holding the light source 51, the shade 81, the cover 91, and the like, and the thermal conductivity for radiating the heat generated by the module substrate 54. It is formed as a plate-thick member. In addition, if the intensity | strength and heat dissipation are securable, the base part 31 can also be formed not only with metal materials, such as an aluminum alloy, but with other materials, such as resin, or the combination of those materials.

  The light source unit 51 is a part that emits light toward the irradiation surface side of the lighting fixture 11 (in the room, the floor surface side). The light source unit 51 is disposed on the irradiation surface side of the base 31. As shown in FIG. 4, the light source unit 51 has a plurality of LEDs 53 and has a flat plate shape arranged on the light source mounting part 32 of the base 31. Specifically, the light source unit 51 includes a plurality (six in this embodiment) of module substrates 54 arranged in a substantially annular shape. Each module substrate 54 is mainly configured by mounting LEDs 53 as a plurality of point light sources on a flat substrate 52 as a light emitting element substrate including a light emitting element. The plurality of LEDs 53 include an LED 53a as a main light source and an LED 53b for a security light. The safety light LED 53b is not always necessary. Further, the safety light LED 53 b may not be mounted on the substrate 52, and may be mounted on a mounting surface of another substrate different from the substrate 52, for example. The plurality of LEDs 53 a are arranged in an arc shape and at substantially equal intervals along the circumferential direction of each module substrate 54. As shown in FIG. 4, the plurality of LEDs 53 in each module substrate 54 includes a plurality of (in the present embodiment, 14) LEDs 53 a and a single LED 53 b. The plurality of LEDs 53a are arranged so as to have a substantially annular shape on the irradiation surface side of the six module substrates 54 formed in a substantially annular shape.

As shown in FIG. 4, the substrate 52 included in the module substrate 54 is formed in a substantially arc shape having a predetermined width in plan view. The board | substrate 52 has the edge part 52a formed along the radial direction in the both ends which oppose the circumferential direction. The module substrates 54 are connected by wiring components 58 that electrically connect the module substrates 54 with the end portions 52a in the circumferential direction facing each other. Each module board 54 can form the light source part 51 which comprised substantially annular | circular shape by making each edge part 52a of the circumferential direction oppose and connect. Each module substrate 54 is attached to the light source attachment portion 32 by a plurality of (three in this embodiment) screw members 59. The module substrate 54 is electrically connected to a power supply device 62 included in a power supply unit 61 for lighting the LED 53 by a wiring 57. Since each module substrate 54 is fixed with the back surface of the mounting surface of the substrate 52 in contact with the irradiation surface side of the light source mounting portion 32, when each module substrate 54 generates heat, the heat of the module substrate 54 is changed to the base 31. It is transmitted to (light source mounting portion 32). The heat transmitted to the base portion 31 (light source mounting portion 32) is transferred from the base portion 31 to the arm portion 41 (particularly the arm member 42), the shade 81, and the cover 91. The heat transferred to each member is transferred to the air around each member when the ambient temperature is lower than those temperatures. Thereby, the heat of each module substrate 54 is radiated to the air around the lamp body 21 and the arm portion 41.
In addition, each module board | substrate 54 may be attached to the light source attachment part 32 via a heat conductive sheet (not shown) or thermal radiation grease, and thereby higher heat dissipation can be obtained.
In the present embodiment, the surface mount type LED 53, which is an example of a light emitting element, is used as the light source. However, the type of the light source is not limited to the LED, and for example, a COB type light emitting module or an organic EL element (OLED) is used. Even if it exists, it is feasible.
In the present embodiment, the module substrates 54 are connected by the wiring components 58 that electrically connect the module substrates 54, but are not particularly limited. For example, wiring may be performed for each module substrate 54 so that each module substrate 54 and the power supply unit 61 are connected to supply power individually.

  In addition, in the lighting fixture 11 of this embodiment, although it is the structure which utilizes directly the light radiate | emitted from LED53, without using a lens etc., it does not specifically limit. For example, a lens, a light diffusing member, or the like may be provided between the module substrate 54 and the shade 81. By providing a lens, a light diffusing member, and the like, the light emitted from the module substrate 54 can be distributed and the amount of light emitted from the luminaire 11 and the spread of the light can be adjusted.

The shade 81 is a hollow shade that covers the irradiation surface side of the base 31. The seed 81 is an optical member that transmits and diffuses light from the module substrate 54 disposed on the irradiation surface side of the light source mounting portion 32. The shade 81 has a concave shape in cross section with the upper end opened. In the shade 81 of this embodiment, the cross-sectional shape is formed to include a linear outer peripheral wall portion 84 and an inner peripheral wall portion 82, and a curved lower surface portion 83 connecting the outer peripheral wall portion 84 and the inner peripheral wall portion 82. . The seed 81 was formed in a ring shape having a rotational surface shape of a cross section composed of an outer peripheral wall portion 84, a lower surface portion 83 and an inner peripheral wall portion 82. The shade 81 has a cylindrical inner peripheral wall portion 82, a curved lower surface portion 83 that extends from the inner peripheral wall portion 82 and extends downward, and a cylindrical shape that extends upward from the lower surface portion 83. An outer peripheral wall portion 84 is provided. The shape of the upper end surface of the shade 81 is substantially the same as or slightly larger than the shape of the base portion 31. The shade 81 is provided with a plurality (three in the present embodiment) of screw attachment portions 82a to which the screw member 49 can be screwed onto the inner surface of the inner peripheral wall portion 82. The seed 81 is formed of a translucent translucent (for example, milky white) acrylic resin material or the like. The screw attachment portion 82 a included in the shade 81 is aligned with the screw attachment portion 43 c of the arm cover 43 included in the arm portion 41 via the base portion 31, and is screwed by the screw member 49. Thereby, the shade 81 is fixed to the irradiation surface side of the base 31.
The shape of the shade is not limited to the shape of the present embodiment. For example, the cross-sectional shape of the shade may be configured to have a triangular cross-section, a square cross-section, a polygonal cross-section, or a cross-section arc.
Moreover, the fixing method of the base 31 of the shade 81 is not particularly limited to this embodiment. For example, the shade 81 can be directly attached to the base 31 with an attachment member such as a screw.
The shade 81 of the present embodiment has a curved lower surface portion 83 that spreads downward, but this shape allows light to be efficiently diffused to the inside of the lamp main body 21. It can brighten directly under.

  The cover 91 is a cover for covering the attachment surface side (ceiling surface side) of the light source attachment portion 32. The cover 91 is a portion facing the ceiling surface C in the lamp main body 21. The cover 91 has a substantially annular shape having a predetermined width in the radial direction when seen in a plan view, and has a rectangular shape in cross section with its lower end opened. The cover 91 of this embodiment is formed so as to form a substantially annular shape by combining three substantially arc-shaped cover members 95. The shape of the lower end surface of the shade 81 is substantially the same as or slightly larger than the outer contour shape of the base 31. The cover 91 is provided with a plurality (three in the present embodiment) of screw attachment portions 92 to which screw members 93 (see FIG. 3) such as decorative screws can be screwed on the radially outer side of the upper end surface. The cover 91 has a plurality of (three in this embodiment) cutout portions 94 that are cut out in a substantially rectangular shape in plan view at a position corresponding to the arm portion 41. The cover 91 is a screw in a state where the outer end portion in the radial direction of the arm portion 41 attached to the base portion 31 (the end portion on the lamp body 21 side of the arm portion 41) is covered with the radially outer portion of the notch portion 94. The member 93 is attached to the base portion 31 by being screwed into the screw fixing portion 92 and the cover fixing portion 35 of the base portion 31. Since the cover 91 is attached only with the screw member 93, the cover 91 can be detached from the base portion 31 by removing the screw member 93. By making it possible to remove the cover 91 from the base 31, it is possible to easily remove dust, insects, and the like that have entered the lamp body 21. When removing dust, insects, or the like that has entered the shade 81, the screw member 93 that fixes the cover 91 is removed, the cover 91 is removed from the base 31, and the gap between the base 31 that passes through the inside of the shade 81 is removed. Dust and insects can be discharged to the outside through the part. The cover 91 may be removed entirely, but it may be configured such that only a predetermined cover member 95 is removed to remove dust, insects, and the like.

  The arm portion 41 is an arm-shaped portion that couples the lamp body 21 and the mounting portion 71 and supports the lamp body 21. In the arm portion 41, the power source side end portion of the arm portion 41 coupled to the power source portion 61 side is higher than the lamp body side end portion of the arm portion 41 coupled to the lamp main body 21 side. Be placed. The arm portion 41 can be inserted with a wiring 57 extending from the module substrate 54. The arm portion 41 includes a metal arm member 42 and a resin arm cover 43 that covers the irradiation surface side (lower side) of the arm member 42. The arm member 42 has a V shape in plan view, an arm base portion 42a attached to the attachment portion 71, an elongated plate-like arm extension portion 42b extending bifurcated from the arm base portion 42a, and the arm extension portion 42b. And has an arm end portion 42c that is L-shaped in side view and attached to the base 31. The arm member 42 is formed using a metal material such as aluminum having a high thermal conductivity. The arm cover 43 has a triangular frame shape in plan view. The arm cover 43 has an arm cover main body 43a and an arm cover end portion 43b. The arm cover main body 43a is V-shaped in a plan view and U-shaped in cross-section, covers the irradiation surface side (lower side) of the arm member 42, and fits the arm member 42 at the upper end of the arm cover main body 43a. . The arm cover end 43b is a portion that is connected to the arm cover main body 43a and accommodates the arm end 42c. The arm cover end portion 43b has a screw attachment portion 43c at a position corresponding to the screw attachment portion 82a of the shade 81. The arm portion 41 is covered with the arm cover 43 on the irradiation surface side, the arm base portion 42a of the arm member 42 is attached to a mounting bracket 72 included in the mounting portion 71 by a screw member, and the arm end portion 42c of the arm member 42 is screwed. The member is attached to the arm fixing portion 34 of the base portion 31. The two arm end portions 42c and 42c of the arm member 42 are attached to each of the adjacent base portions 31 and 31 among the plurality of base portions 31 by screw members.

As shown in FIG. 5, the arm cover main body 43 a fitted with the arm member 42 extends obliquely upward from the lamp main body 21 toward the radially inner side, and the attachment portion 71 and the power supply portion 61 are attached to the lamp main body 21. Hold on the face side. That is, as shown in FIG. 5, the attachment portion 71 and the power source portion 61 are disposed above the base portion 31 of the lamp body 21 in a side view. That is, since the mounting portion 71 and the power supply portion 61 are located above the module substrate 54 attached to the light source mounting portion 32 of the base portion 31, shadows due to the mounting portion 71 and the power supply portion 61 are unlikely to occur. It can illuminate directly underneath. The arm part 41 is separated from the attachment part 71 and the ceiling surface C as it goes from the power supply part 61 side to the lamp body 21 side. As described above, the mounting portion 71 and the power source portion 61 are arranged in the center of the lighting fixture 11, and the mounting portion 71 supports the ring-shaped lamp body 21 via the arm portion 41. A substantially circular space S is formed between the attachment portion 71 and the power source portion 61 and the lamp body 21. Further, the user can face the ceiling surface C through the space S. Since the arm part 41 has a branched structure, the arm part 41 can ensure strength compared to one arm part that does not branch, and the mounting strength of the lamp body 21 is improved. Since the strength can be ensured by making the arm portion 41 into a branched structure, the arm portion 41 does not need to be formed only from a metal material, and the arm cover 43 is formed from a resin material as in the present embodiment, so that a lighting fixture is formed. 11 can be reduced in weight.
One end (arm base portion 42a) of the arm member 42 included in the arm portion 41 is attached to the mounting bracket 72 included in the mounting portion 71, but is not particularly limited. For example, it is good also as a structure which attaches the end (arm base 42a) of the arm member 42 to the power supply part 61. FIG.

  The power supply unit 61 is disposed in the center of the lighting fixture 11 in plan view, and includes a power supply device 62, a power supply cover 64, and a main body cover 65. The power supply unit 61 has a mounting portion 71 disposed at the top.

  The power supply device 62 supplies power to the LED 53 included in the module substrate 54 of the light source unit 51 to turn on and control the LED 53. Specifically, the power supply device 62 converts the alternating current supplied from the catch ceiling 100 via the mounting portion 71 into a direct current, and supplies the converted current to the plurality of LEDs 53 mounted on the module substrate 54. . The power supply device 62 is provided with a connector (not shown). When the lighting apparatus 11 is attached to the ceiling, the power supply device 62 is electrically connected to an external power source via the hook ceiling 100 by connecting to the adapter 110 which is a wiring component. Connected. The power supply device 62 and the module substrate 54 are electrically connected by a wiring 57.

As shown in FIG. 7, the power supply unit 61 supplies power to the LEDs 53 of the module substrate 54 to control the lighting of the LEDs 53, and a radio signal (this embodiment) from a remote controller (not shown). In the embodiment, a receiving unit 63 that is a remote control receiving unit that receives an infrared signal) is provided. The receiving unit 63 is connected to the power supply device 62. The receiving unit 63 is disposed in the vicinity of the outer peripheral edge of the power supply unit 61 in plan view. The receiving unit 63 is arranged on the upper part of the light receiving window 66 opened in the vicinity of the outer peripheral edge of the flat bottom portion 65 b of the main body cover 65. The receiving unit 63 is mounted on a receiving unit substrate 68, and the receiving unit substrate 68 is fixed to the main body cover 65 by a screw member 69. The receiving unit 63 is electrically connected to the receiving unit substrate 68. A channel changeover switch 67 described later is mounted on the receiver board 68. The receiving unit 63 receives a remote control signal using a radio signal as a transmission medium, which is transmitted from a remote control operated by a user through a light receiving window 66 opened in a circle on the flat bottom portion 65 b of the main body cover 65. Can do. The light receiving window 66 is disposed in the vicinity of the outer peripheral edge of the bottom portion 65b of the main body cover 65 in plan view, and is disposed in the vicinity of a channel changeover switch 67 described later (see FIG. 4). By transmitting a predetermined signal to the receiving unit 63 by the remote controller, the user can remotely operate the module substrate 54 (LED 53) to be turned on / off, dimmed, and the like. The power supply device 62 is disposed in the main body cover 65 while being accommodated in the power supply cover 64. As shown in FIG. 7, the receiving unit board 68 on which the receiving unit 63 and the channel changeover switch 67 are mounted is disposed outside the power source cover 64 in the main body cover 65.
Further, in the present embodiment, the receiving unit 63 that receives the remote control signal is provided. In addition, the control may not be performed using a wireless signal but may be performed using a wired control. In this case, the receiving unit may not be provided.

  The power supply cover 64 is a member that can be accommodated in the main body cover 65 in a substantially bottomed box shape with an open upper end. The power supply cover 64 is a metal member that houses the power supply device 62 and the like and covers the periphery of the power supply device 62 and the like, thereby ensuring thermal conductivity and electrical insulation. That is, since the power supply device 62 and the like are accommodated in the power supply cover 64 and disposed in the main body cover 65, they are not in direct contact with the inner wall of the main body cover 65, and are kept at a predetermined distance from the main body cover 65. Insulation is ensured. The internal shape of the power supply cover 64 is formed so that the height and width thereof are substantially the same as or slightly larger than the height and width of the power supply device 62 and the like. The outer shape of the power supply cover 64 is formed so as to be accommodated in the main body cover 65. The power supply device 62 and the like are accommodated in the main body cover 65 from one end side (upper end side) of the main body cover 65 while being accommodated in the power supply cover 64, and are fixed to the bottom portion 65b of the main body cover 65 by a screw member.

  The main body cover 65 is a bottomed cylindrical member that is circular in plan view and has an open upper end. The main body cover 65 accommodates the power supply device 62 accommodated in the power supply cover 64. The main body cover 65 includes a cylindrical peripheral wall portion 65a and a bottom portion 65b that closes one end of the peripheral wall portion 65a. The peripheral wall portion 65 a has a circular shape in plan view, and is substantially the same as the outer contour shape in plan view of the cylindrical cover 79 that serves as the exterior cover of the attachment portion 71. As shown in FIG. 7, the peripheral wall 65a is formed with an opening through which the channel changeover switch 67 is inserted and protruded in the vicinity of the light receiving window 66. A light receiving window 66 for exposing the receiving unit 63 is formed in the vicinity of the outer peripheral edge of the bottom 65b. The main body cover 65 has its upper end closed by a mounting bracket 72, and the mounting bracket 72 is mounted by a screw member.

  The channel changeover switch 67 is a switch that selects and changes a channel in order to set the luminaire 11 corresponding to the remote controller. The channel changeover switch 67 is disposed in the vicinity of the light receiving window 66 provided in the power source 61 (bottom 65b) and with the switch tip protruding from the side of the power source 61 (peripheral wall 65a).

  The attachment portion 71 is for attaching the lighting fixture 11 to the ceiling surface C. The attachment part 71 is a part for mechanically and electrically attaching the lighting fixture 11 to the hooking ceiling 100 provided on the ceiling surface C, which is disposed on the upper part of the power supply part 61 (the peripheral wall part 65a). The attachment portion 71 is a portion that supports the lamp body 21 via the arm portion 41. The mounting portion 71 includes a mounting bracket 72, a stud 78 that is a support member, and a cylindrical cover 79. The mounting bracket 72 includes an oval substrate 73 having a notch in a portion where the circles face each other, and a bent plate portion 74 bent in a stepped shape (L-shape) standing from the notch. The bent plate portion 74 has a substantially rectangular flat plate-shaped stud attachment portion 74a for attaching the stud 78 to the upper end portion. In the stud mounting portion 74 a, a pair of dharma holes 75 and 75 including a large-diameter hole 75 a and a small-diameter hole 75 b are formed at positions that are point-symmetric with respect to the axial center of the mounting bracket 72. The dharma hole 75 has a large diameter hole 75a having a substantially perfect circle shape into which the heads (see FIG. 7) of a pair of knurled screws 78a of the stud 78 are inserted, and a large diameter hole 75a along the rotation direction of the stud 78. The small-diameter hole 75b has a long hole shape that is smaller in the width direction. The large-diameter hole 75a is formed so that the diameter is slightly larger than the head of the knurled screw 78a, and is formed so as to correspond to the position of the pair of knurled screws 78a. The small-diameter hole 75b is formed as a long hole continuous with the large-diameter hole 75a in plan view, and is continuous with a predetermined length along the circumferential direction. The small-diameter hole 75b is formed so as to be smaller in the width direction than the large-diameter hole 75a, that is, the head of the knurled screw 78a cannot be inserted vertically, but the shaft portion of the knurled screw 78a. It is formed to be larger in the width direction, that is, so that the shaft portion of the knurled screw 78a can be inserted. The mounting bracket 72 closes the upper end of the power supply unit 61 (main body cover 65) and is attached to the power supply unit 61 (main body cover 65) with a screw member.

  The stud 78 is arranged on the upper part of the mounting bracket 72 and is used for mechanically and electrically connecting the lamp body 21 by being engaged with the hook ceiling 100 provided on the ceiling surface C via an adapter. is there. The stud 78 has a substantially circular shape in a plan view, and has an insertion hole 78b through which the adapter 110 is inserted at the center. The adapter 110 is engaged with the stud 78 by inserting the adapter 110 through the insertion hole 78b.

The cylindrical cover 79 covers the mounting bracket 72 and the stud 78 by assembling a pair of semi-cylindrical members so that the mounting bracket 72 and the stud 78 are not visible to the user. The cylindrical cover 79 is formed using a plastic resin material. The cylindrical cover 79 is also called a sealing cover.
In this embodiment, the hook ceiling 100 is used as a wiring component. However, the present invention is not limited to this, and a wiring component such as a hooking rosette may be used.

  As 2nd Embodiment of this invention, the lighting fixture 111 shown in FIGS. 10-12 can be mentioned. The luminaire 111 according to the second embodiment does not include the cover 91 as in the first embodiment, and includes a chassis 131 and an elongated bar-shaped arm portion 141 instead of the base portion 31 instead of the base portion 31. is there. The chassis 131 is formed by combining three base portions 132 into a ring shape. The base portion 132 is formed in a U-shape in a sectional view so as to be composed of a light source arrangement portion and two peripheral wall portions so as to be continuous on both sides thereof. A portion of the base portion 132 that faces the surface to which the lighting fixture 111 is attached is a light source arrangement portion, and the light source portion is arranged on the irradiation surface side of the light source arrangement portion. Since other configurations such as the light source unit and the power source unit are the same as those in the first embodiment, the description thereof is omitted. Since the lighting fixture 111 according to the second embodiment has a configuration that does not include the cover 91, the heat generated from the light source unit is transferred to the chassis 131 and is radiated from the chassis 131 into the air. Thereby, heat dissipation improves further than 1st Embodiment. In the lighting fixture 111, by using the elongated bar-shaped arm portion 141 instead of the arm portion 41, the vertical ventilation of the lighting fixture 111 is further improved, and the heat dissipation is further improved.

  In the lighting fixture 11 according to the present embodiment described above, the lamp main body (light emitting unit) 21 and the power source unit 61 are separated, and the lamp main body (light emitting unit) 21 and the power source unit are coupled by the arm unit 41. That is, in the luminaire 11, the lamp main body (light emitting unit) 21 and the power supply unit 61 are separated from each other, so that the heat generated from the light source unit 51 and the power supply unit 61 hardly interfere with each other. Moreover, since the space S (gap) is provided between the lamp main body 21 and the power supply unit 61, heat is hardly generated on the ceiling surface side of the lamp main body 21, and heat dissipation is improved.

In the lighting fixture 11 of this embodiment, it has the attaching part 71 which attaches the lighting fixture 11, the power supply part 61 is arrange | positioned so that it may overlap the lower part of the attaching part 71, and the attaching part 71 and a power supply are in the center of the lighting fixture 11. The part 61 is arranged, and the lamp body 21 is arranged so as to have a space (gap) S on the outer peripheral side thereof. As described above, since the space (gap) S is provided between the lamp main body 21 and the attachment portion 71 and the power supply portion 61, it is easy to visually check when the lighting fixture 11 is attached to the ceiling surface C. Furthermore, since it can be mounted using the space S (for example, by inserting a hand into the space S), it is easy to mount the lighting fixture 11. Further, by providing the space (gap) S, air permeability between the ceiling side and the irradiation surface side of the lighting fixture 11 is improved, and air is retained on the ceiling surface C of the lighting fixture 11 to prevent heat from being generated. , Better heat dissipation.
In the present embodiment, the power supply unit 61 is disposed so as to overlap the lower portion of the attachment portion 71, but the present invention is not limited thereto, and may be disposed around the attachment portion 71 so as not to overlap the attachment portion 71. In the case of this configuration, since the power supply unit 61 and the attachment unit 71 are not overlapped, the lighting fixture 11 can be thinned.
In the present embodiment, the power supply unit 61 and the attachment unit 71 are arranged at the center of the lighting fixture 11. You may arrange in.

In the lighting fixture 11 of the present embodiment, the arm portion 41 is attached so as to be separated from the ceiling surface C as it goes from the attachment portion 71 toward the lamp body 21. Thereby, since the distance of the light source part 51 and the ceiling surface C leaves | separates, in the attachment surface side (ceiling surface side) of the lamp main body 21, a heat | fever does not burn easily. Specifically, in the luminaire 11, the lamp body 21 has a gap D (see FIG. 5) between the lamp body 21 and the ceiling surface C. Therefore, it is possible to suppress the stay of air flow on the ceiling surface C side of the lamp body 21 and to increase the contact area with the surrounding air, compared to a flat ceiling-mounted lighting fixture such as a circular shape or a rectangular shape. , Heat dissipation can be improved. Furthermore, by making the outer shape of the lamp body 21 hollow, it is possible to further suppress the retention of the air flow between the lamp body 21 and the ceiling surface C, and to increase the contact area with the surrounding air. , Heat dissipation can be further enhanced. That is, according to the luminaire 11, the air flow is prevented from staying between the ceiling surface C and the back surface side of the luminaire 11, and is released from the lamp body 21 to the ceiling surface side (the device back side). Heat is prevented from being trapped in the central portion on the back side of the lighting fixture 11, and heat dissipation is improved. Furthermore, in the lighting fixture 11, the cross-sectional shape of the cover 91 at the top of the lamp body 21 is made semicircular or semi-elliptical in addition to the rectangular shape like the cover 91, so that the air resistance in the radial direction of the lamp body 21 is increased. Is reduced and the air flow becomes smooth. That is, the air permeability (air fluidity) on the ceiling surface side of the lamp body 21 is improved, and the heat dissipation is further enhanced. Since the arm member 42 included in the arm portion 41 is directly attached to the base portion 31, heat accumulated in the base portion 31 propagates to the arm member 42 and is also radiated from the arm member 42. Therefore, heat dissipation is further improved. .
In the present embodiment, the arm portion 41 is formed of an independent member. However, the present invention is not limited to this. For example, the arm portion 41 may be formed integrally with the attachment portion 71 (attachment bracket 72) or integrally with the base portion 31. .

  In the lighting fixture 11 of this embodiment, since the external shape of the lamp main body (light-emitting part) 21 is a hollow shape, it is easy for an installation worker to hold it.

  When the remote control receiving unit is arranged at a position deviated from the vicinity of the center of the lighting fixture as in the lighting fixture disclosed in Patent Document 1, there is a possibility that the reception sensitivity of the remote control signal from all directions cannot be made uniform. On the other hand, in this embodiment, the receiving part 63 is arrange | positioned in the position which can receive from the light-receiving window 66 of the power supply part 61 near the center of the lighting fixture 11. FIG. Therefore, the reception sensitivity of the remote control signal from all directions on the irradiation surface side of the luminaire can be made substantially uniform.

  In addition, the normal channel changeover switch is arranged so as not to be visible when the shade is covered so as not to stand out. Therefore, it is necessary to remove the shade when switching channels. On the other hand, the lighting fixture 11 of the present embodiment has a channel changeover switch 67 on the side surface (peripheral wall portion 65a) of the main body cover 65 that is formed in a bottomed cylindrical shape and that houses the power supply device 62. Thereby, the user can switch the channel of the remote control without removing the shade 81. In addition, since the channel changeover switch 67 is provided on the side surface of the power supply unit 61, it is not noticeable. The channel changeover switch 67 is disposed in the vicinity of the light receiving window 66. As a result, the receiving unit 63 and the channel changeover switch 67 disposed in the back of the light receiving window 66 can be configured with a single substrate, which is advantageous in terms of cost.

The lighting fixture 11 of the present embodiment has a cover 91 that can be attached to and detached from the base 31 on the attachment surface side (ceiling surface side) of the lamp body 21. Thereby, when an insect etc. penetrate | invades, an insect can be removed not from the irradiation surface side (mounting surface side of LED53 which is a light source) but from the attachment surface side. Thereby, it can be set as the structure which does not remove the shade 81, and since the possibility that a user will touch the electricity supply part of the module board 54 is low, it is safe.
In addition, it is good also as a structure which provides means, such as a cover, so that a user may not touch the electricity supply part of the module board | substrate 54, and the shade 81 can be attached or detached.

  The lighting apparatus 11 of the present embodiment has a knurled screw 78a for connecting the stat 78 and the power supply unit 61, and the dharma hole 75 through which the knurled screw 78a passes is disposed at a position not overlapping the arm unit 41 in plan view. doing. Thereby, when attaching the lighting fixture 11, the arm part 41 does not become obstructive, and the attachment property of the lighting fixture 11 improves.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible. For example, the luminaire 11 may be applied to a pendant light or the like in addition to a ceiling light.

DESCRIPTION OF SYMBOLS 11 Lighting fixture 21 Lamp main body 41 Arm part 51 Light source part 53 LED
54 Module board 61 Power supply 71 Mounting part C Ceiling surface S Space

Claims (7)

A lighting fixture attached to a surface to be attached,
A lamp body,
A power supply for supplying power to the lamp body;
A mounting portion for mounting the lighting fixture on the mounted surface;
An arm part having an arm member and an arm cover covering the irradiation surface side of the arm member ;
The power supply unit is disposed so as to overlap the lower part of the attachment unit,
And the lamp body and the power supply unit is coupled through the arm portion,
A lighting fixture having a space between the lamp body and the power source. The lighting fixture according to claim 1,
In the arm part,
The lighting fixture by which the power supply part side edge part of the said arm part couple | bonded with the said power supply part side is arrange | positioned above the lamp body side edge part of the arm part couple | bonded with the said lamp body side. The lighting apparatus according to claim 1 or 2,
The said arm part is a lighting fixture which inclines to the downward side of the said lighting fixture as it goes to the said lamp main body side from the said power supply part side. It is a lighting fixture as described in any one of Claims 1-3,
The lighting fixture whose outer shape of the said lamp main body is a hollow shape. It is a lighting fixture as described in any one of Claims 1-4, Comprising:
The said power supply part and the said attaching part are lighting fixtures arrange | positioned in the center of the said lamp main body. It is a lighting fixture as described in any one of Claims 1-5, Comprising:
Operation by remote control signal is possible,
The power supply unit includes a receiving unit that receives the remote control signal,
The said receiving part is a lighting fixture arrange | positioned at the bottom part of the said power supply part. It is a lighting fixture of Claim 6, Comprising:
The said power supply part is a lighting fixture which has the channel changeover switch of the said remote control signal in the side part.

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