The lighting apparatus 11 according to the first embodiment of the present invention will be described with reference to Figs. 1 to 9. Fig. The lighting apparatus 11 according to the present embodiment is a lighting apparatus using a plurality of LEDs 53 (see Fig. 4) as a light source. As shown in Fig. 5, the lighting device 11 is a sealing light attached to the indented ceiling 100, which is a wiring component provided on the ceiling surface C as the attachment surface. In the following description, the side irradiating the light of the lighting device 11 is set to the irradiation surface side of the lighting device 11 (the bottom side in the state where the lighting device 11 is attached to the ceiling surface C) The side opposite to the face side and facing the ceiling face C of the lighting device 11 is the attachment face side of the lighting device 11 (the ceiling side when the lighting device 11 is attached to the ceiling face C) . The vertical direction of the lighting device 11 will be described as the vertical direction (vertical direction in Fig. 5) in a state in which the lighting device 11 is installed on the ceiling surface C. Fig. The direction orthogonal to the up-and-down direction will be described as a radial direction. In the description of the present embodiment, it is assumed that the state in which the lighting apparatus 11 and the like are viewed from below is viewed in a plan view. The lighting device 11 and the like viewed from the perpendicular direction with respect to the vertical direction will be seen from the side. The cross-sectional shape of the lighting device 11 and the like is to be viewed in cross section.
1 and 2, the lighting device 11 has a ring-shaped lighting unit main body 21, an arm portion 41, a power source portion 61, and an attaching portion 71. The lamp body 21 is supported by the attachment portion 71 through a plurality of arm portions 41.
The luminaire body 21 is a light emitting portion (light emitting portion) of the lighting device 11. The lamp body 21 mainly has a base portion 31, a light source portion 51, a lamp shade 81 and a cover 91. As shown in Fig. 3, the luminaire body 21 is an annular shape whose shape is a predetermined width as seen from a plane, and has a hollow. The lamp body 21 is supported by a plurality of arm portions 41 extending radially outward from the attachment portion 71 with the attachment portion 71 at the center. As shown in Fig. 5, the lamp body 21 is attached to the ceiling face C through a plurality of arm portions 41 and an attaching portion 71. As shown in Fig. The lamp body 21 has a predetermined distance D between the upper end and the ceiling face C as a distance in the vertical direction. The lamp unit main body 21 and the power source unit 61 are coupled through the arm portion 41 and the attaching portion 71.
In the present embodiment, the shape of the lamp body 21 viewed from the plane is a circular shape having a predetermined width, but is not particularly limited. The luminaire main body 21 may be, for example, an elliptical shape, a triangular shape, a quadrangular shape, or a hollow shape with a predetermined width as viewed from a plane. The luminaire body 21 may have a shape having a plurality of luminaire bodies 21 as well as a hollow shape.
The base 31 is a substantially annular plate-like member having a predetermined width in the radial direction as seen from the plane. The base portion 31 of the present embodiment is formed by combining a plurality of (three in this embodiment) circular arc-shaped plate members each having a predetermined width to form a substantially annular shape, but not limited thereto, . The term " substantially annular " includes not only a complete annular ring but also a state in which an annular ring is formed intermittently with a gap between adjacent base portions due to variation in molding or assembly. The base 31 is formed of a metal material such as an aluminum alloy having a high thermal conductivity. One end of the arm member 42 of the arm portion 41 is attached to the base portion 31 while the light source portion 51, the lamp shade 81 and the cover 91 are held. The base 31 has a light source attaching portion 32, a light source fixing portion 33, an arm fixing portion 34, and a cover fixing portion 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 a plurality of module substrates 54 in contact with each other. The surface of the light source attachment portion 32 on the side of the irradiation surface has a function of a reflecting surface for reflecting the light emitted from the LED 53. [ The light source fixing portion 33 is a screw hole for screwing the screw member 59. A plurality of light source fixing portions 33 are provided in the light source attachment portion 32 in order to fix the light source portion 51 (module substrate 54) using a screw member 59. Further, the light source fixing portion 33 is formed using, for example, a burring process, so that the length of the threaded portion with the screw member 59 can be made long. The arm fixing portion 34 is a screw hole for screwing the screw member. A plurality of arm fixing portions 34 are provided on the base portion 31 in order to fix one end of the arm member 42 of the arm portion 41 using a screw member. The cover fixing portions 35 are provided at a plurality of positions (three positions in the present embodiment) in the vicinity of the outer periphery of the light source attachment portion 32 at regular intervals in the main direction. Incidentally, the term " equidistant interval " includes a complete equidistant interval as well as a minute deviation caused by a deviation in forming or assembling. The cover fixing portion 35 is a screw hole for screwing the screw member 93. A plurality of cover fixing portions 35 are provided in the light source attachment portion 32 in order to fix the cover 91 using the screw member 93. [ The base 31 is fixed to the screw attachment portion 41 of the arm cover 43 by using the screw member 49 in a state of being fitted between one end of the arm cover 43 of the arm portion 41 and the lamp shade 81, And the screw attachment portion 82a of the lamp shade 81 is screwed. Thus, the lamp shade 81 is fixed to the irradiated surface side of the base portion 31. The base 31 has a function as a heat sink. The module substrate 54 is adhered to the light source attaching portion 32 so as to be adhered to the light source attaching portion 32 so that the LED 53 is attached to the module substrate 54. [ The heat generated from the module substrate 54 is conducted to the light source attachment portion 32 of the base portion 31. [ The heat transferred to the base 31 is conducted to the arm portion 41, the lamp shade 81 and the cover 91 which are in contact with the base portion 31 and can radiate heat from the respective members to the surrounding air.
The base 31 is made of aluminum alloy or the like in consideration of the strength for holding the light source 51, the lamp shade 81 and the cover 91 and the heat conductivity for dissipating the heat generated by the module substrate 54. [ And is formed as a member made of a metal material and having a predetermined thickness. The base portion 31 is not limited to a metal material such as an aluminum alloy and may be formed of other materials such as resin or a combination of these materials as long as strength and heat radiation can be ensured.
The light source portion 51 is a portion that emits light toward the irradiation surface side (the floor surface side in the room) of the lighting device 11. The light source portion 51 is disposed on the irradiation surface side of the base portion 31. 4, the light source unit 51 has a plurality of LEDs 53 and is disposed on the light source attachment portion 32 of the base 31. The light source unit 51 is a flat plate. Specifically, the light source unit 51 is composed of a plurality of (six in this embodiment) module substrates 54 provided in a substantially annular shape. The term " substantially annular shape " includes not only a complete annular shape but also a state in which the adjacent module substrates are intermittently arranged in an annular shape with a gap therebetween. Each module substrate 54 is a light emitting element substrate having a light emitting element. The module substrate 54 is mainly constituted by mounting an LED 53, which is a plurality of point light sources, on a flat substrate 52. The plurality of LEDs 53 include an LED 53a as a main light source and an LED 53b as an auxiliary light. The auxiliary LED 53b is not necessarily required. In addition, the auxiliary LED 53b can be omitted on the substrate 52. [ For example, it can be mounted on a mount surface of a substrate other than the substrate 52. [ The plurality of LEDs 53a are arranged in an arc shape at regular intervals along the main direction of each module substrate 54. [ As shown in Fig. 4, the plurality of LEDs 53 in each module substrate 54 are composed of a plurality of LEDs (in this embodiment, fourteen LEDs 53a) and one LED 53b have. The plurality of LEDs 53a are disposed so as to have a substantially toric 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 of the module substrate 54 is formed in a substantially circular arc shape having a predetermined width in plan view. The term " approximately circular arc shape " includes not only a complete arc shape but also a shape having a notch or an extension portion in a part of the arc. The substrate 52 has an end portion 52a formed along the radial direction at both opposite end portions in the main direction. Each of the module substrates 54 is connected to each other through the wiring parts 58 which electrically connect the module substrates 54 with the end portions 52a in the main direction facing each other. Each of the module substrates 54 is connected to each of the end portions 52a in the main direction so as to be opposed to each other, so that the light source portion 51 having a substantially annular shape can be formed. Each of the module substrates 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 the power supply unit 62 included in the power supply unit 61 for lighting the LED 53 by the wiring 57. [ Each module substrate 54 has the back surface of the mounting surface of the substrate 52 abutting the irradiation surface side of the light source attachment portion 32. Therefore, when each module substrate 54 generates heat, Heat is transferred to the base portion 31 (light source attachment portion 32). The heat transferred to the base 31 (light source attachment portion 32) is transmitted from the base 31 to the arm portion 41 (particularly, the arm member 42), the lamp shade 81 and the cover 91. The heat transferred to each member is transferred to the ambient air of each member when the ambient temperature is lower than these temperatures. As a result, the heat of each module substrate 54 is radiated to the air around the lamp body 21 and the arm portion 41.
Each module substrate 54 can be attached to the light source attachment portion 32 through a thermally conductive sheet (not shown) or a heat dissipation grease. The use of a heat conductive sheet or a heat dissipating grease results in higher heat dissipation.
In the present embodiment, surface-mounted LED 53, which is an example of a light emitting element, is used as a light source. However, the type of the light source is not limited to the LED, and for example, a COB type light emitting module, an organic EL element (OLED), or the like can be realized.
In the present embodiment, the module substrates 54 are electrically connected through the wiring parts 58, but are not particularly limited. For example, each of the module substrates 54 and the power supply unit 61 may be connected to each of the module substrates 54, and power may be supplied individually.
In the lighting device 11 of the present embodiment, the light emitted from the LED 53 is directly used without using a lens or the like, but is not particularly limited. For example, a lens or a light diffusion member may be provided between the module substrate 54 and the lamp shade 81. Providing a lens or a light diffusing member makes it possible to control the amount of light radiated from the illuminating device 11 and the diffusion of light by controlling the light emitted from the module substrate 54.
The lamp shade 81 is a hollow lamp shade covering the irradiation surface side of the base portion 31. [ The lamp shade 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 attachment portion 32. [ The lamp shade (81) has a concave shape as seen from a cross section where an upper end is opened. The lamp shade 81 of the present embodiment is formed so as to be composed of the outer peripheral wall portion 84 having a straight line shape in cross section, the inner peripheral wall portion 82 having a straight line shape, and the curved bottom portion 83. The lower surface portion 83 is formed to connect between the outer peripheral wall portion 84 and the inner peripheral wall portion 82. The lamp shade 81 was formed into a ring shape having a rotary surface shape of a cross section composed of an outer peripheral wall portion 84, a bottom portion 83 and an inner peripheral wall portion 82. The lamp shade 81 has a cylindrical inner peripheral wall portion 82, a curved lower surface portion 83, and a cylindrical outer peripheral wall portion 84. The lower surface portion 83 is provided continuously from the inner peripheral wall portion 82 and has a pseudo spherical curved surface shape whose surface extends in the radial direction as it goes downward. The outer peripheral wall portion 84 is provided so as to extend upward from the lower surface portion 83. The shape of the upper end surface of the lamp shade 81 is formed to be the same as or slightly larger than the shape of the base portion 31. The lamp shade 81 is provided with a plurality of (three in this embodiment) screw attachment portions 82a that can be fitted with the screw member 49 on the inner surface of the inner peripheral wall portion 82. [ The lamp shade 81 is formed of a transparent translucent (for example, milky white) acrylic resin material or the like. The screw attachment portion 82a of the lamp shade 81 is aligned with the screw attachment portion 43c of the arm cover 43 of the arm portion 41 via the base portion 31 so that the screw member 49 . Thus, the lamp shade 81 is fixed to the irradiated surface side of the base portion 31.
Further, the shape of the lamp shade is not limited to the shape of the present embodiment. For example, the cross-sectional shape of the lampshade may be configured as a triangular cross-section, a cross-sectional rectangular cross-section, a cross-sectional polygonal cross-section, or a cross-sectional circle.
The method of fixing the base 31 of the lamp shade 81 is not particularly limited to this embodiment. For example, the lamp shade 81 may be directly attached to the base portion 31 using an attachment member such as a screw.
The lamp shade 81 of the present embodiment has a curved bottom surface portion 83 whose surface expands in a downward direction. With this configuration, light can be efficiently diffused to the inside of the lamp body 21, so that it is possible to brighten (directly below) the lighting apparatus 11.
The cover 91 is a cover for covering the attachment surface side (ceiling front surface side) of the light source attachment portion 32. The cover 91 is a portion facing the ceiling face C of the lamp body 21. The planar shape of the cover 91 is a substantially annular shape having a predetermined width in the radial direction. The sectional shape of the cover 91 is a rectangular shape in which the lower end is opened. The cover 91 of the present embodiment is formed so as to have a substantially annular shape by combining three substantially circular cover members 95. The term " substantially annular shape " includes not only a complete annular shape, but also a state in which an annular shape is formed intermittently with a gap between adjacent cover members due to molding or assembly deviation. The shape of the lower end face of the lamp shade 81 is the same as or slightly larger than that of the outline contour of the base portion 31. [ The cover 91 is provided with a plurality of (three in this embodiment) screw attaching portions 92 which can be screwed on a screw member 93 (see Fig. 3) such as a makeup screw on the outer side in the radial direction of the upper surface have. The cover 91 is formed with a plurality of (three in this embodiment) notches 94 cut out in a substantially rectangular shape in plan view at a position corresponding to the arm portion 41. [ The " rectangular shape " includes not only a complete rectangular shape, but also a shape having an arc shape along the outer end surface of the cover 91. [ The cover 91 can be attached to the base portion 31 by screwing the screw member 93 to the cover fixing portion 35 having the screw attachment portion 92 and the base portion 31. [ At this time, the cover 91 is formed so as to cover the radially outer end (the end of the arm portion 41 on the side of the lamp body 21) of the arm portion 41 attached to the base portion 31, Direction outer side portion. Since the cover 91 is attached only by the screw member 93, the cover 91 can be detached from the base portion 31 by removing the screw member 93. By making the cover 91 detachable from the base 31, it is possible to facilitate removal of dust, insects, etc. that the user has infiltrated into the lamp body 21. [ The cover 91 is detached from the base 31 and the lamp shade 81 is removed from the lamp shade 81. In this case, Dust, insects and the like can be discharged to the outside through the base portion 31 arranged on the opening side of the lamp shade 81 and the gap portion of the lamp shade 81. The entire cover 91 can be removed, but only a predetermined cover member 95 may be detached to remove dust or worms.
The arm portion 41 is an arm-shaped portion that connects the luminaire body 21 and the attachment portion 71 and supports the luminaire body 21. [ In the arm portion 41, the power source side end portion of the arm portion 41, which is coupled to the power source portion 61 side, is connected to the power source side end portion of the arm portion 41 of the lamp unit main body 21, As shown in FIG. The arm portion 41 is capable of inserting and passing a wiring 57 extending from the module substrate 54 therein. The arm portion 41 has a metal arm member 42 and a resin arm cover 43 covering the irradiation surface side (lower side) of the arm member 42. The arm member 42 has a V-shape in plan view. The arm member 42 has an arm base 42a, an arm extension 42b, and an arm end 42c. The arm base portion 42a is attached to the attachment portion 71. [ The arm extending portion 42b has an elongated plate shape extending from the arm base portion 42a in two bifurcations. The arm end portion 42c is continuously attached to the arm extension portion 42b and attached to the base portion 31. [ The arm end 42c has an L-shape in a side view. The arm member 42 is formed of a metal material such as aluminum having a high thermal conductivity. The arm cover 43 is in the form of a triangular frame as seen from a plane. The arm cover 43 has an arm cover body 43a and an arm cover end 43b. The arm cover main body 43a has a V shape in plan view and a U shape in cross section. The arm cover main body 43a covers the irradiation surface side (lower side) of the arm member 42 and also engages the arm member 42 at the upper end of the arm cover main body 43a. The arm cover end portion 43b is a portion that is provided continuously to the arm cover main body 43a and accommodates the arm end portion 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 lamp shade 81. [ The arm portion (41) is covered with the arm cover (43) on the irradiation surface side. The arm portion 41 of the arm member 42 is attached to the mounting bracket 72 of the mounting portion 71 using the screw member. The arm end portion 42c of the arm member 42 is attached to the arm fixing portion 34 of the base portion 31 using a screw member. The two arm ends 42c and 42c of the arm member 42 are attached to the respective adjacent base portions 31 and 31 of the plurality of base portions 31 using a screw member.
5, the arm cover main body 43a with the arm member 42 sandwiched therebetween extends obliquely upward in the radial direction from the luminaire main body 21 and has an attachment portion 71 and a power source portion 61 ) On the attachment surface side of the luminaire body (21). 5, the attachment portion 71 and the power supply portion 61 are disposed above the base portion 31 of the lighting apparatus main body 21, as viewed from the side. That is, since the attachment portion 71 and the power source portion 61 are located above the module substrate 54 attached to the light source attachment portion 32 of the base 31, the attachment portion 71 and the power source portion 61 It is difficult for shadows to be generated, and the direct underneath of the lighting apparatus 11 can be illuminated brightly. The arm portion 41 is separated from the attachment portion 71 and the ceiling surface C as it goes from the power source portion 61 side toward the lamp body main body 21 side. As described above, the attachment portion 71 and the power supply portion 61 are disposed at the center of the lighting device 11, and the attachment portion 71 supports the ring-shaped lighting device body 21 through the arm portion 41 A circular space S is formed between the attaching portion 71 and the power supply portion 61 and the lamp body 21 as viewed in plan. Further, the user can face the ceiling face C through the space S. Since the arm portion 41 has a branched structure, the strength can be secured more than the one arm portion which does not branch, and the attachment strength of the luminaire body 21 is improved. It is not necessary to form the arm portion 41 only from a metal material and the arm cover 43 is formed of a resin material as in the present embodiment, The weight of the lighting apparatus 11 can be reduced.
One end (arm base portion 42a) of the arm member 42 of the arm portion 41 is attached to the mounting bracket 72 of the mounting portion 71, but is not particularly limited. For example, one end (arm base portion 42a) of the arm member 42 may be attached to the power source portion 61. [
The power supply unit 61 is disposed at the center of the lighting device 11 in a plan view. The power supply unit 61 has a power supply unit 62, a power supply cover 64, and a main body cover 65. The power supply unit 61 is provided with an attaching portion 71 at an upper portion thereof.
The power supply unit 62 supplies power to the LED 53 of the module substrate 54 of the light source unit 51 to turn on and control the LED 53. [ Specifically, the power supply unit 62 converts an alternating current supplied from the hooking ceiling 100 into a direct current through the attaching portion 71, and supplies the converted current to a plurality of LEDs (not shown) mounted on the module substrate 54 53). A connector (not shown) is provided in the power supply unit 62 and connected to the adapter 110 which is a wiring component when the lighting apparatus 11 is attached to the ceiling, And is electrically connected. The power supply device 62 and the module substrate 54 are electrically connected by the wiring 57. [
7, the power supply unit 61 includes a power supply unit 62 for supplying power to the LEDs 53 of the module substrate 54 and for controlling the lighting of the LEDs 53 and a remote controller Which is a remote control receiver for receiving a wireless signal (a signal by infrared rays in the present embodiment) from a remote controller (not shown). The receiving unit 63 is connected to the power supply unit 62. The receiving portion 63 is disposed in the vicinity of the outer periphery of the power supply portion 61 as seen from the plane. The receiving section 63 is disposed on the upper part of a circular receiving window 66 which is opened near the outer periphery of the flat bottom portion 65b of the main cover 65. [ The receiving section 63 is mounted on the board 68 for the receiving section and the board 68 for the receiving section is fixed to the body cover 65 using the screw member 69. The receiver 63 is electrically connected to the substrate 68 for the receiver. A channel switching switch 67, which will be described later, is mounted on the substrate 68 for the receiving portion. The receiving section 63 can receive the remote control signal through the receiving window 66 of the main body cover 65. [ The light receiving window 66 is disposed in the vicinity of the outer periphery of the bottom portion 65b of the main body cover 65 as seen in a plan view and is arranged close to the channel changeover switch 67 described later (see FIG. 4). By transmitting a predetermined signal to the receiving section 63 using the remote controller, the user can remotely operate the module substrate 54 (the LED 53) to turn on / off / light control. The power supply device 62 is disposed in the main cover 65 in a state of being housed in the power supply cover 64. The board 68 for the receiving portion on which the receiving portion 63 and the channel changeover switch 67 are mounted is disposed on the outer side of the power cover 64 in the main body cover 65 as shown in Fig.
In the present embodiment, the receiver 63 for receiving the remote control signal is provided. However, the present invention is not limited to this, and other sensor control methods may be employed. Further, it is not control by a radio signal, but control by a wired line, in which case the receiver may be omitted.
The power supply cover 64 is a member that can be accommodated in the main cover 65 in the form of a substantially bottomed tube with an opened top. The term " substantially cylindrical shape having a bottom " includes not only completely continuous shapes but also shapes having a gap in corners formed by machining a piece of sheet metal by bending or the like . The power supply cover 64 is a metal member that accommodates the power supply unit 62 and the like and covers the periphery thereof to ensure thermal conductivity and electrical insulation. That is, since the power supply unit 62 is accommodated in the power supply cover 64 and disposed in the main cover 65, the power supply unit 62 is not in direct contact with the inner wall of the main cover 65, And electrical insulation is ensured. The inner shape of the power cover 64 is formed so that the height dimension and the width dimension thereof are equal to or slightly larger than the height dimension and the width dimension of the power supply device 62 or the like. The outer shape of the power cover 64 is formed so as to be accommodated in the main cover 65. The power supply device 62 and the like are accommodated in the main cover 65 from one end side (upper end side) of the main cover 65 while being housed in the power supply cover 64, As shown in Fig.
The main body cover 65 is a tubular member having a bottom, which is circular in shape as viewed from the top and whose upper end is open. The main cover 65 accommodates the power supply unit 62 and the like accommodated in the power supply cover 64. [ The main body cover 65 includes a cylindrical main wall portion 65a and a bottom portion 65b for closing one end of the main wall portion 65a. The circumferential wall 65a has a circular shape in a plan view and is shaped like an outline contour as viewed from the plane of the cylindrical cover 79 serving as an outer cover of the attachment portion 71. [ As shown in Fig. 7, an opening is formed in the peripheral wall 65a in the vicinity of the light receiving window 66 so as to allow the channel changeover switch 67 to pass therethrough. In the bottom portion 65b, a light receiving window 66 for exposing the receiving portion 63 is formed in the vicinity of the outer periphery. The upper end of the main body cover 65 is closed by using the mounting bracket 72, and the mounting bracket 72 is attached using a screw member.
The channel changeover switch 67 is a switch for selecting and switching a channel to set the lighting device 11 corresponding to the remote control. The channel changeover switch 67 is provided in a state in which the switch tip is protruded on the side of the power supply section 61 (the main wall portion 65a) near the light receiving window 66 provided in the power supply section 61 (bottom portion 65b) .
The attaching portion 71 is for attaching the illuminating device 11 to the ceiling surface C. The attachment portion 71 is disposed on the upper portion of the power supply portion 61 (the main wall portion 65a) and is used for mechanically and electrically attaching the lighting device 11 to the raised and raised ceiling 100 provided on the ceiling surface C Section. The attachment portion 71 is a portion for supporting the lamp body 21 through the arm portion 41. [ The attachment portion 71 has an attachment bracket 72, a stud 78 as a support member, and a cylindrical cover 79. The attachment metal fitting 72 is composed of an elliptical substrate 73 having a notch at the opposite portion of the circle and a bending plate portion 74 bent in a stepped shape (L shape) provided upright from the notch. The bending plate portion 74 has a substantially rectangular flat plate-like stud attachment portion 74a to which a stud 78 is attached at an upper end portion. The term " substantially rectangular " includes not only a complete rectangle but also a shape having a curved portion in a side portion. A pair of keyhole-shaped holes 75 and 75 made of a large-diameter hole 75a and a small-diameter hole 75b are formed in the stud attaching portion 74a at positions where they are point-symmetrical with respect to the axis center of the mounting bracket 72 Is installed. The keyhole-shaped hole 75 is formed by a substantially circular large-diameter hole 75a into which a head portion (see Fig. 7) of a pair of knurling screws 78a of the stud 78 is inserted, Diameter small hole 75b in the width direction smaller than the large diameter hole 75a along the rotating direction of the stud 78. [ The term " substantially circular shape " includes not only a complete circular shape but also a circular shape such as an elliptical shape from a variation in molding. The large diameter hole 75a is formed such that its diameter is slightly larger than the head portion of the knurled screw 78a and is provided so as to correspond to the position of the pair of knurled screws 78a. The small-diameter hole 75b is formed as a continuous slot with the large-diameter hole 75a as seen from the plane, and is continuous in a predetermined length along the main 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 small-diameter hole 75b is formed such that the head portion of the knurled screw 78a can not be inserted vertically and can not pass therethrough. The small diameter hole 75b is formed to be wider in the width direction than the shaft portion of the knurled screw 78a. That is, the small diameter hole 75b is formed so that the shaft portion of the knurled screw 78a can be inserted and passed therethrough. The mounting bracket 72 is attached to the power source unit 61 (main cover 65) by using a screw member to close the upper end of the power source unit 61 (main cover 65).
The stud 78 is disposed on the upper portion of the mounting bracket 72 and is for mechanically and electrically connecting the luminaire body 21 to the ceiling surface C with the indented ceiling 100 fitted thereto through an adapter . The stud 78 is formed in a substantially circular shape in plan view. The stud 78 has an insertion hole 78b for inserting the adapter 110 into the center thereof. The adapter 110 is fitted into the stud 78 by inserting the adapter 110 into the insertion hole 78b. The term " substantially circular shape " includes not only a complete circular shape but also a circular shape and a shape having a notch in a part.
The cylindrical cover 79 covers the mounting bracket 72 and the stud 78 by a combination of a pair of cylindrical members to prevent the mounting bracket 72 and the stud 78 from being seen by the user will be. The cylindrical cover 79 is formed of a plastic resin material. The cylindrical cover 79 is also referred to as a sealing cover.
In the present embodiment, the leaded ceiling 100 is used as the wiring component. However, the present invention is not limited to this, and a wiring component such as a leaded sealing block may be used.
In the second embodiment of the present invention, the lighting apparatus 111 shown in Figs. 10 to 12 is exemplified. The lighting device 111 according to the second embodiment is provided with the chassis 131 instead of the base 31 without the cover 91 as in the first embodiment, And has a bar shaped arm portion 141. The chassis 131 is formed to have a ring shape by combining three trough-shaped base portions 132. The base portion 132 is formed in a U-shape in cross section so as to be composed of the light source arrangement portion and two main wall portions continuous to both sides thereof. A portion of the base portion 132 facing the attachment surface of the lighting device 111 is a light source arrangement portion, and the light source portion is disposed on the irradiation surface side of the light source arrangement portion. Other configurations of the light source unit, the power source unit, and the like are the same as those of the first embodiment, and a description thereof will be omitted. Since the lighting device 111 according to the second embodiment does not include the cover 91, the heat generated from the light source portion is transferred to the chassis 131 and is radiated to the air from the chassis 131. As a result, the heat radiation performance is further improved as compared with the first embodiment. In the lighting mechanism 111, the arm portion 141 is formed in an elongated rod-like shape instead of the arm portion 41, so that the ventilation of the lighting device 111 in the up-and-down direction is further improved and heat dissipation is further improved.
In the lighting apparatus 11 according to the present embodiment described above, the lamp unit main body (light emitting unit) 21 and the power supply unit 61 are separated, and the lamp unit main body (light emitting unit) 21 and the power supply unit are connected to the arm unit 41 . That is, in the lighting device 11, since the lamp body (light emitting portion) 21 and the power supply portion 61 are separated from each other, it is difficult for the heat generated from the light source portion 51 and the power supply portion 61 to interfere with each other. Further, since the space S (gap) is provided between the lamp body 21 and the power supply unit 61, heat is hardly generated on the ceiling surface side of the lamp body 21, and heat radiation performance is improved.
The lighting device 11 of the present embodiment has an attachment portion 71 to which the lighting device 11 is attached and the power source portion 61 is disposed so as to overlap the lower portion of the attachment portion 71, 11 and the lamp unit main body 21 are arranged on the outer circumferential side thereof with a space S therebetween. As described above, since the space (gap) S is provided between the lamp body 21, the attachment portion 71 and the power supply portion 61, it is easy to attach the lighting device 11 to the ceiling surface C . Moreover, since the space S can be used (for example, by putting a hand into the space S), it is easy to attach the lighting device 11. Further, by forming the space (gap) S, the ventilation of the ceiling side and the irradiation surface side of the lighting device 11 is improved, and air stays in the ceiling surface C of the lighting device 11, It prevents the feathering and improves heat dissipation.
In the present embodiment, the power supply unit 61 is disposed so as to overlap the lower portion of the attachment unit 71, but the present invention is not limited to this, and the power supply unit 61 can be disposed around the attachment unit 71 so as not to overlap the attachment unit 71. In the case of this configuration, since the power supply unit 61 and the attaching unit 71 are not overlapped with each other, the lighting apparatus 11 can be made thinner.
The power supply unit 61 and the attaching unit 71 are disposed at the center of the illuminator 11 but the present invention is not limited to this arrangement. 11).
In the lighting device 11 of the present embodiment, the arm portion 41 is inclined so as to be spaced apart from the ceiling surface C as the lamp unit body 21 is directed from the attachment portion 71. As a result, the distance between the light source portion 51 and the ceiling surface C is reduced, so that heat is less likely to be felt on the mounting surface side (ceiling front surface side) of the lamp body 21. [ Specifically, in the lighting apparatus 11, the lighting apparatus main body 21 has a gap D (see FIG. 5) between the ceiling surface C and the ceiling surface. Therefore, it is possible to restrain the flow of air from the ceiling surface (C) side of the luminaire body (21) to be smaller than the flat ceiling direct attach type lighting apparatus such as a circular shape or a rectangular shape, It is possible to increase heat dissipation. Further, by making the outer shape of the lamp body 21 hollow, it is possible to further suppress the flow of air between the lamp body 21 and the ceiling face C, thereby increasing the contact area with the surrounding air So that heat dissipation can be further enhanced. That is, according to the lighting device 11, it is possible to prevent the flow of air from staying between the ceiling surface C and the back surface side of the lighting device 11 and to prevent the flow of air from the lighting device main body 21 to the ceiling surface side The emitted heat is suppressed from leaning on the central portion on the back side of the lighting apparatus 11, and the heat radiation performance is improved. In addition, in the lighting device 11, the cross-sectional shape of the cover 91 on the upper portion of the lamp body 21 is formed into a semicircular shape or a semi-elliptical shape other than a rectangular shape such as the cover 91, The air resistance in the radial direction is reduced, and the flow of air is improved. That is, the ventilation property (air flowability) of the ceiling surface side of the lamp body 21 is improved, and the heat radiation property can be further improved. The arm member 42 of the arm portion 41 is directly attached to the base portion 31. [ The heat collected in the base 31 is propagated to the arm member 42 and is also radiated from the arm member 42, so that heat dissipation is further improved.
For example, the arm portion 41 may be integrally formed with the attachment portion 71 (attachment fitting 72), or may be integrally formed with the base portion 31. In this embodiment, .
In the lighting device 11 of the present embodiment, since the external shape of the lamp body (light emitting portion) 21 is hollow, the installation worker is liable to lift it by hand.
When the remote control receiver is disposed at a position deviated from the vicinity of the center of the lighting device as in the lighting device disclosed in Patent Document 1, there is a possibility that the reception sensitivity of the remote control signal in all directions can not be made uniform. On the other hand, in the present embodiment, the receiving section 63 is disposed at a position that can receive from the light receiving window 66 of the power source section 61 near the center of the lighting device 11. [ Therefore, it is possible to reduce unevenness of the reception sensitivity of the remote control signal from all directions on the irradiation surface side of the lighting apparatus.
In addition, the ordinary channel changeover switch is arranged so as not to be visible when the lamp shade is covered, in order to prevent it from being conspicuous. For this reason, it is necessary to remove the lamp shade when performing channel switching. On the other hand, in the lighting apparatus 11 of the present embodiment, a channel changeover switch 67 (not shown) is formed in the side surface (the main wall 65a) of the main cover 65 in which the power supply device 62 is housed, ). Accordingly, the user can change the channel of the remote controller without removing the lamp shade 81. [ Further, since the channel changeover switch 67 is provided on the side surface of the power source unit 61, it is not noticeable. Further, the channel changeover switch 67 is arranged close to the light receiving window 66. As a result, the receiving section 63 and the channel changeover switch 67 disposed inside the light receiving window 66 can be constituted by a single substrate, which is advantageous in terms of cost.
The lighting device 11 of the present embodiment has a cover 91 detachable from the base 31 on the attachment surface side (ceiling front surface side) of the lamp body 21. Accordingly, when an insect or the like intrudes, the insect can be removed from the side of the irradiation surface (from the side of the mounting surface of the LED 53 which is the light source) but from the attachment surface side. Accordingly, the lamp shade 81 can be configured not to be detached, and the possibility that the user touches the conductive portion of the module substrate 54 is low, which is safe.
In addition, a means such as a cover may be provided so that the user does not contact the conductive portion of the module substrate 54, and the lamp shade 81 may be attached and removed.
The lighting device 11 of the present embodiment has a knurling screw 78a for connecting the stud 78 and the power source 61 and has a keyhole-shaped hole 75 through which the knurled screw 78a passes And is arranged at a position not overlapping with the arm portion 41 as seen from a plane. Accordingly, when attaching the lighting device 11, the arm portion 41 is not disturbed, and the adhesion of the lighting device 11 is improved.
The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications are possible. For example, the lighting device 11 may be applied to a pendant light, etc. in addition to a sealing light.
