JP2018195430A - Lighting device - Google Patents

Abstract

Provided is an illumination device that can cope with downsizing.
A lighting device includes a light source, a main body portion, a fin, and a mounting spring. The main body portion 27 is provided in a cylindrical shape, and a flat portion 29 is provided on a part of the outer peripheral surface, and a light source is disposed. The fin 20 is provided on the upper portion of the main body portion 27. The attachment spring 14 has a base end portion 49 attached to the flat surface portion 29 of the main body portion 27, and a distal end portion 50 side protruding in a direction along the outer peripheral surface of the main body portion 27.
[Selection] Figure 1

Description

  Embodiments described herein relate generally to a lighting device including a mounting spring.

  Conventionally, there is an illuminating device called a downlight that is embedded in an embedded hole provided in a ceiling board. In this lighting device, a plurality of mounting springs are attached to the outer peripheral surface of a cylindrical main body portion on which the light source is arranged, and the main body portion and the mounting spring elastically deformed along the main body portion are inserted into the embedding holes. By doing so, the mounting spring is developed on the ceiling board, and the main body is supported on the ceiling board.

  In general, the attachment spring is attached by being fitted into a spring attachment portion projecting from the outer peripheral surface of the main body portion on the base end side, and the distal end side is developed in the outer diameter direction of the main body portion.

  By the way, there is a demand for downsizing of the lighting device, but when the diameter of the main body is reduced, the inner diameter of the embedded hole of the ceiling plate is also reduced. For this reason, in the configuration of the lighting device in which a mounting spring that extends in the outer diameter direction of the main body portion is used and a spring mounting portion for fitting and mounting the mounting spring is provided on the outer peripheral surface of the main body portion, a buried inner diameter is small. It becomes difficult or impossible to attach to the insertion hole, making it difficult to respond to downsizing.

JP 2010-16003 A

  The problem to be solved by the present invention is to provide a lighting device that can cope with downsizing.

  The lighting device of the embodiment includes a light source, a main body, a fin, and an attachment spring. The main body portion is provided in a cylindrical shape, and a flat portion is provided in a part of the outer peripheral surface, and a light source is disposed. The fin is provided on the upper portion of the main body. The attachment spring has a proximal end portion attached to the flat portion of the main body portion, and a distal end portion projecting in a direction along the outer peripheral surface of the main body portion.

  According to the present invention, it can be expected to cope with downsizing.

It is a perspective view of the upper part side of the illuminating device which shows one Embodiment. It is a perspective view of the lower part side of an illuminating device same as the above. It is a disassembled perspective view of the lower part side of an illuminating device same as the above. It is sectional drawing of an illuminating device same as the above. It is a top view of an illuminating device same as the above. It is a top view in the state where the tip side of the attachment spring of the lighting device same as the above was curved.

  Hereinafter, an embodiment will be described with reference to FIGS. 1 to 6.

  The illuminating device 10 is a downlight that is embedded in a circular embedding hole provided in a ceiling board, and is a small downlight having a diameter of about 50 mm, for example.

  The illumination device 10 includes an instrument main body 11, a light source 12 and an optical component 13 disposed in the instrument main body 11, a pair of attachment springs 14 attached to the outer peripheral surface of the instrument main body 11, and the like. Furthermore, the illumination device 10 includes a power supply unit (not shown) that supplies lighting power to the light source 12. The light source 12 and the power supply unit are electrically connected by a power feeding cable.

  First, the appliance main body 11 includes an upper radiator 17 and a decorative frame 18 attached to the lower part of the radiator 17.

  The radiator 17 is made of a metal material such as aluminum. The radiator 17 includes a cylindrical tube portion 19 and a plurality of fins 20 protruding from the upper portion of the tube portion 19.

  The cylindrical part 19 is open on the lower surface side, and a light source arrangement part 21 for arranging the light source 12 on the upper surface side is formed. The plurality of fins 20 project in parallel with a predetermined interval. In addition, a wiring hole 22 through which the power supply cable is passed is formed at the upper end of the peripheral portion of the cylindrical portion 19, and a cable holder 23 for holding the power supply cable is attached to the fin 20.

  The decorative frame 18 is a frame portion 24 provided in the same outer peripheral surface shape as the cylindrical portion 19 of the heat radiating body 17, and a fitting that protrudes from the upper portion of the frame portion 24 and is fitted inside the cylindrical portion 19 of the heat radiating body 17. The flange portion 26 that protrudes in the outer diameter direction from the lower portion of the portion 25 and the frame portion 24 is provided.

  A cylindrical main body 27 is configured by the cylindrical portion 19 of the radiator 17 and the frame portion 24 of the decorative frame 18, and a plurality of fins 20 are provided on the upper portion of the main body 27. A pair of attachment springs 14 are attached.

  On the outer peripheral surface of the main body portion 27, a curved surface portion 28 formed by an arc surface of the outer peripheral surface of the main body portion 27 is formed, and a pair of flat surface portions 29 are formed. The curved surface portion 28 and the flat surface portion 29 are formed over both the cylindrical portion 19 of the radiator 17 and the frame portion 24 of the decorative frame 18. The pair of flat surface portions 29 is provided at a target position with respect to the center of the main body portion 27 and at a position parallel to the plurality of fins 20. The flat surface portion 29 is provided so that the outer peripheral surface of the main body portion 27 is recessed, that is, provided so as to be recessed inside the outer diameter region of the curved surface portion 28.

  The pair of flat portions 29 are provided with two upper and lower attachment holes 31 into which two upper and lower attachment screws 30 for attaching the attachment spring 14 are screwed. The upper mounting hole 31 is provided in the radiator 17, and the lower mounting hole 31 is provided in the decorative frame 18.

  Two upper and lower mounting holes 32 are provided at each position of the curved surface portion 28 orthogonal to the pair of flat surface portions 29. The upper mounting hole 32 is provided in the radiator 17, and the lower mounting hole 32 is provided in the decorative frame 18. A coupling screw 33 that couples the radiator 17 and the decorative frame 18 is screwed into the upper mounting hole 32. A fixing screw 34 for fixing the decorative frame 18 and the optical component 13 is screwed into the lower mounting hole 32. The coupling screw 33 and the fixing screw 34 are screws that do not have a head, such as a hexagon socket head screw, and are configured not to protrude from the outer peripheral surface of the main body 27 or to reduce the amount of protrusion.

  In addition, a light emitting module 38 is used for the light source 12. The light emitting module 38 includes a substrate 39, a plurality of LED chips as light emitting elements mounted on the surface side of the substrate 39, and a phosphor layer covering the LED chips, and the surface of the phosphor layer is a light emitting surface 40. It is comprised by the COB module which becomes. The light emitting module 38 is held in a state where the back surface side of the substrate 39 is arranged on the lower surface of the light source arrangement portion 21 of the radiator 17 and pressed by a plurality of holding screws 41. The light source 12 is not limited to the COB module, and a surface-mounted LED may be used, or another light emitting element such as an organic EL other than the LED may be used.

  Further, the optical component 13 includes a cylindrical reflector 44 that penetrates in the vertical direction and expands downward, and a light-transmitting cover 45 that is attached so as to cover the inside of the reflector 44. . The reflector 44 is fitted to the inside of the decorative frame 18 from above and is fixed to the decorative frame 18 by a fixing screw 34.

  The mounting spring 14 is formed by a flat plate spring 48. The attachment spring 14 (leaf spring 48) has a proximal end portion 49 on one end side and a distal end portion 50 on the other end side, and is formed in a shape that tapers from the proximal end portion 49 side toward the distal end portion 50 side. ing. In the initial state of the mounting spring 14 (the state before elastic deformation due to the application of an external force), the mounting spring 14 is formed in a flat plate shape.

  The base end portion 49 of the mounting spring 14 has a flat plate shape, and an inner surface side which is one surface thereof is disposed on the flat surface portion 29 of the main body portion 27, and the upper and lower portions 2 are inserted through two upper and lower insertion holes 51 provided in the base end portion 49. Two mounting screws 30 are screwed into the mounting holes 31 of the flat portion 29, and the base end portion 49 of the mounting spring 14 is mounted so as to be in surface contact with the flat portion 29. The mounting screw 30 has a head portion 30a and a screw shaft portion 30b, and uses a washer 52 for preventing loosening.

  Since the flat surface portion 29 of the main body portion 27 is recessed inward from the outer diameter region (virtual outer diameter wire) of the curved surface portion 28, the head 30a of the mounting screw 30 with the mounting spring 14 attached to the flat surface portion 29 is provided. Is located inside the outer diameter region of the curved surface portion 28 of the main body 27 or slightly protrudes from the outer diameter region of the main body 27.

  The distal end 50 side of the mounting spring 14 attached to the flat surface portion 29 of the main body portion 27 protrudes in a direction along the outer peripheral surface of the main body portion 27. The direction along the outer peripheral surface of the main body portion 27 includes a tangential direction with respect to the outer peripheral surface of the main body portion 27, a circumferential direction of the outer peripheral surface of the main body portion 27, and the like. The distal end portion 50 side of the mounting spring 14 in the initial state protrudes in a direction parallel to the flat portion 29 of the main body portion 27. The distal end 50 side of the pair of attachment springs 14 protrudes in opposite directions.

  The front end 50 side of the mounting spring 14 protrudes obliquely upward, and the lower edge of the mounting spring 14 is configured as an engaging edge 53 that engages the ceiling plate.

  The attachment spring 14 is disposed on the side of the main body 27 and below the fins 20.

  A flexible cover such as rubber, silicone, or vinyl may be attached to the tip 50 of the mounting spring 14 in order to protect the ceiling plate.

  The power supply unit converts an external power source such as an AC power source into a lighting power source such as a DC power source and supplies the light source to the light emitting module 38. The power supply unit is connected to the instrument body 11 side by a power feeding cable.

  In order to install the lighting device 10 on the ceiling panel, first, connect the power line wired at the position of the embedded hole below the ceiling panel to the power unit, and insert the power unit into the embedded hole. And place it on the ceiling board.

  Insert the instrument body 11 from the upper fin 20 side into the ceiling plate embedding hole with the tip 50 side of the pair of mounting springs 14 being elastically deformed by pressing it around the outer peripheral surface of the body 27. To do.

  After the distal end 50 side of the pair of mounting springs 14 is inserted into the hole in the ceiling plate after the instrument body 11 is inserted, when the pair of mounting springs 14 are released, the distal end 50 side is moved by the spring force of the pair of mounting springs 14. An engagement edge 53 that protrudes to the side of the main body 27 and is a lower edge of the pair of attachment springs 14 engages with an upper edge of the embedding hole of the ceiling plate. Further, the tip portion 50 side tends to protrude to the side of the main body portion 27 by the spring force of the pair of mounting springs 14, so that the instrument main body 11 is pulled upward with respect to the ceiling plate, and the flange portion 26 of the decorative frame 18 Stops in contact with the lower surface of the ceiling board. Thereby, the installation of the instrument body 11 is completed.

  Further, by supplying lighting power from the power supply unit to the light emitting module 38, the light emitting module is turned on, and light emitted from the light emitting surface 40 is transmitted through the cover 45 and irradiated to the lower illumination space through the reflector 44. .

  The heat generated by the light emitting module 38 during lighting is transmitted to the plurality of fins 20 of the heat radiating body 17, and is radiated into the air above the ceiling plate. At this time, the air around the instrument body 11 flows between the plurality of fins 20 from the side surfaces of the plurality of fins 20, and the air heated by the plurality of fins 20 rises the upper surface of the fins 20. At this time, since the pair of attachment springs 14 are disposed below the fins 20, the flow of air flowing into the space between the plurality of fins 20 from the side surfaces of the plurality of fins 20 is not hindered.

  And in the illuminating device 10 of this embodiment, the plane part 29 is provided in the outer peripheral surface of the main-body part 27, and the attachment structure (attachment screw 30 grade | etc.) Of the attachment spring 14 is attached by attaching the attachment spring 14 to this plane part 29. Since it can be prevented from protruding from the outer peripheral surface (curved surface portion 28) of the main body portion 27 or the amount of protrusion can be reduced, the diameter of the main body portion 27 and the inner diameter of the hole embedded in the ceiling plate are reduced with the downsizing of the lighting device 10. However, the mounting structure of the mounting spring 14 (mounting screws 30 and the like) does not affect the mounting of the ceiling plate in the embedded hole, and can respond to the downsizing of the lighting device 10.

  Further, since the attachment spring 14 is disposed below the fin 20, the attachment spring 14 does not hinder the flow of air flowing through the fin 20, and the influence of heat radiation by the fin 20 is small.

  Further, if the planar portion 29 of the main body 27 and the fins 20 are parallel, the planar portion 29 does not affect the installation of the fins 20. Note that the flat surface portion 29 of the main body portion 27 and the fins 20 do not have to be parallel, and may be orthogonal, for example. Alternatively, the fins 20 may be provided radially.

  Further, when the attachment spring 14 is deformed by being pressed by hand so that the tip end 50 side is wound around the outer peripheral surface of the main body 27, the flat spring shown in FIG. Without returning to the initial state, as shown in FIG. 6, the distal end portion 50 is curved so as to face the outer peripheral surface of the main body portion 27. Note that the bending so that the tip 50 side faces along the outer peripheral surface of the main body 27 includes the fact that the tip 50 protrudes in the direction along the outer peripheral surface of the main body 27.

  As described above, the mounting spring 14 can be installed on the ceiling plate as described above even in a state where the tip 50 side of the mounting spring 14 is curved so as to face the outer peripheral surface of the main body 27. When the instrument main body 11 is installed, if the tip 50 side of the mounting spring 14 is curved in advance so as to face the outer peripheral surface of the main body 27, the mounting spring 14 can be easily pressed by the hand. , Can improve the installation workability.

  Further, since the amount of protrusion of the mounting spring 14 from the main body 27 is reduced, the packaging volume of the instrument main body 11 can be reduced, and the packaging material can be reduced and the transportation cost can be reduced.

  The mounting spring 14 may be formed in a curved state when the mounting spring 14 is manufactured.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
12 Light source
14 Mounting spring
20 fins
27 Main unit
29 Plane section
49 Base end
50 Tip

Claims (3)

With a light source;
A main body portion provided in a cylindrical shape and provided with a flat portion on a part of the outer peripheral surface, and the light source is disposed;
A fin provided on an upper portion of the main body;
An attachment spring in which a base end portion is attached to the flat surface portion of the main body portion, and a distal end portion protrudes in a direction along the outer peripheral surface of the main body portion;
An illumination device comprising: The lighting device according to claim 1, wherein the attachment spring is disposed below the fin. The lighting device according to claim 1, wherein the tip end side of the mounting spring is curved so as to face along the outer peripheral surface of the main body.

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