JP6681010B2 - Lighting equipment - Google Patents

Description

  Embodiments of the present invention relate to a lighting device including a radiator that radiates heat generated by a light emitting unit.

  2. Description of the Related Art Conventionally, a lighting device including a light emitting unit that uses a light emitting element such as an LED includes a heat radiator to efficiently dissipate heat generated by the light emitting unit.

  In such an illumination device, there is a tendency to increase the size of the heat radiator in order to improve the heat radiation performance of the heat radiator in response to the higher output of the light emitting unit.

  When the lighting device is a downlight embedded in the ceiling, the size of the radiator in the radial direction is limited by the opening embedded in the ceiling material, so the radiator must be made large in the height direction.

  However, if the heat radiator is made large in the height direction, the upper portion of the heat radiator may interfere with other structures or the like depending on the ceiling structure, which may hinder the installation of the lighting device.

JP, 2013-182734, A

  The problem to be solved by the present invention is to provide an illuminating device capable of ensuring heat dissipation while suppressing the height of a heat radiator.

The lighting device of the embodiment includes a light emitting unit, a radiator, and a power supply unit. The heat radiator includes a plurality of installation portions on which a light emitting portion is installed, a plurality of first heat radiation fin portions projecting upward from the installation portion, and a plurality of side projections projecting laterally from the upper portions of the plurality of first heat radiation fin portions. It has a 2nd radiation fin part. The plurality of second radiating fin portions are linearly provided continuously from the plurality of first radiating fin portions, and the lower surfaces of the plurality of second radiating fin portions are located at the center side. The tip ends of the second radiating fin portions located on both sides of the radiating fin portion are inclined upward . The power supply unit supplies power to the light emitting unit.

  According to the present invention, it can be expected to secure the heat dissipation of the heat radiator while suppressing the height of the heat radiator.

It is sectional drawing of the illuminating device which shows 1st Embodiment. It is the perspective view seen from the above of an illuminating device same as the above. It is the perspective view seen from the bottom of an illuminating device same as the above. It is a side view of an illuminating device same as the above. It is a side view of the illuminating device which shows 2nd Embodiment.

  Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 4.

  The lighting device 10 is an embedded lighting device. The embedded lighting device is a downlight. The lighting device 10 is embedded in a circular opening 12 opened in the ceiling member 11. The thickness of the ceiling member 11 is about 5 to 25 mm.

  The lighting device 10 includes a lamp device 20 and a fixture 21 for arranging the lamp device 20. Furthermore, the lighting device 10 includes a radiator 22 and a decorative frame 23 that form the fixture 21, and also includes a socket 24, a reflector 25, and a power supply unit 26 arranged in the radiator 22.

  Then, the lamp device 20 covers the housing 28, the metal heat radiation member 29 mounted on the upper portion of the housing 28, the light emitting module 30 mounted on the lower surface of the heat radiation member 29, and the light emitting module 30. A transparent cover 31 attached to the lower surface of the housing 28 is provided. The upper side of the housing 28 is configured as a base that is detachably attached to the socket 24.

  The light emitting module 30 includes a substrate 32 and a light emitting section 33 formed on the substrate 32. The light emitting unit 33 includes a plurality of light emitting elements mounted on the substrate 32. The light emitting unit 33 may use a COB (Chip On Board) module and an SMD (Surface Mount Device) package that use LEDs as light emitting elements, or may use other light emitting elements such as EL elements.

  The device 21 also includes a radiator 22 as a device body, and a decorative frame 23 attached to the lower portion of the radiator 22.

  The heat radiator 22 is made of a metal material. As the metal material, for example, aluminum die casting is used.

  The radiator 22 has a disk-shaped base portion 36. The diameter of the base portion 36 is smaller than the inner diameter of the opening 12 of the ceiling member 11. On the lower surface of the base portion 36, a flat installation portion 37 for installing the lamp device 20 is formed. Since the lamp device 20 installed in the installation unit 37 includes the light emitting unit 33, the light emitting unit 33 is installed in the installation unit 37.

  The radiator 22 includes a plurality of first heat radiating fins 38 protruding upward from the upper surface of the base 36, and a plurality of second heat radiating laterally protruding from the upper portions of the side surfaces 38a of the first heat radiating fins 38. The fin section 39 is provided. Although the first radiating fin portion 38 and the second radiating fin portion 39 are integrally formed, they may be separate bodies as long as they are thermally connected.

  The first radiating fin portions 38 are formed in parallel with each other with a gap 40 therebetween in the width direction (parallel direction). A connecting portion 41, which projects from the base portion 36 and integrally connects the plurality of first radiating fin portions 38, is formed in a central portion of the first radiating fin portion 38. The circumference of the first radiating fin portion 38 is located in the upper region of the base portion 36, and is formed smaller than the inner diameter of the opening 12 of the ceiling member 11. The upper surface of the first radiating fin portion 38 is formed horizontally. An escape portion 42 having a shape in which a corner portion opposite to the protruding direction of the second heat radiation fin portion 39 is obliquely removed is formed on the upper portion of the first heat radiation fin portion 38. The escape portion 42 may have a linear shape or a curved shape.

  The second radiating fin portions 39 are formed in parallel with each other with a gap 43 therebetween in the width direction (parallel direction). The second radiating fin portion 39 is continuous with the first radiating fin portion 38, and is provided linearly and in parallel with the first radiating fin portion 38. The upper surface of the second radiating fin portion 39 is continuously formed horizontally with the upper surface of the first radiating fin portion 38. On the lower surface 39a of the second radiating fin portion 39, the tips of the second radiating fin portions 39 on both sides are inclined upward with respect to the central second radiating fin portion 39. The lower surface 39a of the second radiating fin portion 39 is located so as not to interfere with the mounting spring 48 when the mounting spring 48, which will be described later, is placed along the decorative frame 23 when the lighting device 10 is installed. The vertical and widthwise dimensions of the second radiating fin portion 39 are smaller than the inner diameter of the opening 12 of the ceiling member 11.

  Further, the decorative frame 23 has a decorative frame main body 46 formed in a cylindrical shape. The outer diameter of the decorative frame main body 46 is formed smaller than the inner diameter of the opening 12 of the ceiling member 11. A flange 47 is formed in the lower part of the decorative frame 23 so as to contact the lower surface of the ceiling member 11 when the lighting device 10 is installed and cover the opening 12. Around the decorative frame 23, a plurality of mounting springs 48 for ceiling mounting are mounted. In this embodiment, three mounting springs 48 are used, and one of the mounting springs 48 is arranged below the second radiating fin portion 39.

  Further, the socket 24 is attached to the installation portion 37 of the radiator 22. The base of the lamp device 20 is detachably attached to the socket 24. An insertion hole 51 through which the heat dissipation member 29 of the lamp device 20 is inserted is formed in the center of the socket 24. When the lamp device 20 is attached to the socket 24, the heat dissipation member 29 inserted through the insertion hole 51 comes into contact with the installation portion 37 of the heat dissipation member 22, and the heat dissipation member 29 and the heat dissipation member 22 are thermally connected. Further, when the lamp device 20 is attached to the socket 24, the socket 24 and the lamp device 20 are electrically connected, and the DC power output from the power supply unit 26 can be supplied to the light emitting module 30 of the lamp device 20.

  In addition, the reflector 25 is detachably attached to the decorative frame 23 by means of a fitting provided on the radiator 22. The reflector 25 is formed in a cylindrical shape that expands downward.

  The power supply unit 26 also includes a long case 54 and a power supply circuit 55 housed in the case 54. The case 54 includes a top plate 56 and a case body 57 attached to the lower surface of the top plate 56. The periphery of the power supply unit 26 that intersects in the longitudinal direction is formed smaller than the inner diameter of the opening 12 of the ceiling member 11.

  Side plates 58 bent downward are formed on both sides of the top plate 56, and one end of the side plate 58 is attached to an upper portion of the radiator 22 by a mounting member 59. The attachment member 59 is attached to the upper portion on the tip side of the second radiating fin portion 39. Both sides of the top plate 56 are rotatably connected to both sides of the mounting member 59 by a shaft 60. Therefore, the power supply unit 26 is attached to the tip end side of the second radiator fin portion 39 of the radiator 22. Further, the power supply unit 26 is attached to the tip end side of the second heat dissipating fin portion 39 of the heat dissipating body 22 so as to be vertically swingable about the shaft 60.

  At the other end of the top plate 56, a leg portion 61 to be placed on the upper surface of the ceiling member 11 is formed. The leg portion 61 projects below the side plate 58, and an inclined portion 62 is formed between the leg portion 61 and the side plate 58.

  The power supply circuit 55 is configured to receive AC power, convert the AC power into a predetermined DC power, and supply the DC power to the light emitting module 30 of the lamp device 20 through the socket 24.

  A terminal block 63 is attached to the tip side of the top plate 56, and the terminal block 63 and the power circuit 55 are connected by an electric wire.

  Next, the operation of this embodiment will be described.

  When the lighting device 10 is installed, electric wires such as a power line and a signal line that are wired above the ceiling member 11 are drawn out from the opening 12 below the ceiling member 11 and connected to the terminal block 63 of the power supply unit 26. To do.

  With the tip side of the power supply unit 26 facing upward, the tip side of the power supply unit 26 is inserted into the opening 12, and the power supply unit 26 inserted into the opening 12 is tilted to the upper region of the ceiling member 11.

  The tip end side of the second radiating fin portion 39 is inserted into the opening 12 in succession to the power supply unit 26 with the tip end side from which the second radiating fin portion 39 projects facing upward. Then, while rotating the radiator 22 (apparatus 21) so that the upper portion of the first radiating fin portion 38 is inserted into the opening portion 12, the upper portion of the first radiating fin portion 38 is inserted into the opening portion 12. .

  At this time, as shown in FIG. 4, the lower surface 39a of the second radiating fin portion 39, or the side surface 38a of the first radiating fin portion 38 facing the lower surface 39a of the second radiating fin portion 39 is opened to the opening 12. The heat radiating body 22 can be smoothly rotated by bringing the radiating body 22 into contact with the edge of the heat radiating body 22 and rotating the heat radiating body 22 with the abutting portion as the fulcrum P, and the upper portion of the first heat radiating fin portion 38 becomes the opening portion 12. Can be easily inserted.

  In addition, if the radiator 22 that rotates about the fulcrum P of the edge of the opening 12 is within the virtual line A drawn by the diameter dimension of the opening 12 around the fulcrum P, the radiator 22 is opened. It can be inserted into the part 12. The shape of the radiator 22 that can be inserted into the opening 12 can be set depending on the position of the lower surface 39a of the second radiating fin portion 39, the shape of the escape portion 42 of the first radiating fin portion 38, and the like.

  Then, in a state in which the plurality of mounting springs 48 are elastically deformed and held along the side surface of the radiator 22, the lower portion of the radiator 22 and the tip ends of the plurality of mounting springs 48 are inserted into the opening 12. By inserting the tip ends of the plurality of mounting springs 48 into the opening 12, the holding of the plurality of mounting springs 48 may be released. The plurality of mounting springs 48 that have been released are elastically expanded outward and come into contact with the upper edge of the opening 12 of the ceiling member 11.

  Further, the lower part of the radiator 22, the plurality of mounting springs 48, and the decorative frame 23 are inserted into the opening 12. As it is inserted into the opening 12, the plurality of mounting springs 48 act to elastically pull up the device 21 above the ceiling member 11. As a result, the flange 47 of the decorative frame 23 comes into contact with the lower surface of the ceiling member 11, and the ceiling member 11 is sandwiched and held between the flange 47 and the plurality of mounting springs 48.

  The power supply unit 26 is rotated according to the thickness of the ceiling member 11, the legs 61 on the tip side of the power supply unit 26 are placed on the upper surface of the ceiling member 11, and the tip side of the power supply unit 26 is supported by the ceiling member 11. .

  Then, after the lighting device 10 is installed, by supplying direct-current power from the power supply unit 26 to the light emitting module 30 of the lamp device 20, the light emitting section 33 of the light emitting module 30 emits light, and the light from the light emitting section 33 is reflected by the reflector 25. The light passes through the inside and is emitted to the illumination space below.

  The heat generated when the light emitting section 33 emits light is transmitted from the substrate 32 to the heat dissipation member 29, is transmitted from the heat dissipation member 29 to the heat dissipation body 22, and is dissipated from the heat dissipation body 22 into the air.

  The heat of the light emitting portion 33 transmitted to the radiator 22 is transmitted to the entire radiator 22 including the first heat radiation fin portion 38 and the second heat radiation fin portion 39.

  As shown in FIG. 1, heat is transferred to the first radiating fins 38, so that the air warmed in the first radiating fins 38 rises from above the first radiating fins 38 and before being heated. Air at the ambient temperature flows into the gap 40 of the first radiating fin portion 38 from the lower side of the first radiating fin portion 38, and the air flow F1 flows upward from below through the gap 40 of the first radiating fin portion 38. Occurs. This air flow F1 enables efficient heat dissipation from the first heat dissipation fin portion 38.

  Further, heat is transferred to the second radiating fin portion 39, so that the air warmed by the second radiating fin portion 39 rises from the upper side of the second radiating fin portion 39, and the air at the ambient temperature before being warmed is released. The air flows F2 from the lower side of the second radiating fin portion 39 into the gap 43 of the second radiating fin portion 39, and through the gap 43 of the second radiating fin portion 39, from below to above. This air flow F2 enables efficient heat dissipation from the second heat dissipation fin portion 39. The second radiating fin portion 39 projects to the side of the first radiating fin portion 38 and has the lower surface 39a. Therefore, a flow F2 of air passing from the lower surface 39a to the upper surface is generated, and a high heat radiating effect is obtained. be able to.

  Since the lighting device 10 of the present embodiment includes the radiator 22 having the second radiator fin portion 39 protruding laterally from the upper portion of the first radiator fin portion 38, the height of the radiator 22 is suppressed. However, it is possible to ensure the heat dissipation of the radiator 22 that can cope with the high output of the lamp device 20.

  Further, since the first radiating fin portion 38 and the second radiating fin portion 39 are provided in a straight line and in parallel, the air flow generated by the radiating heat is smooth and the heat radiating property is good, and the manufacturability of the radiating body 22 is high. Good.

  Further, since the power supply unit 26 is attached to the tip end side of the second heat dissipation fin portion 39 of the heat radiator 22, the power supply unit 26 and the heat radiator 22 can be inserted into the opening 12 of the ceiling member 11.

  When the lighting device 10 is removed from the ceiling member 11, the decorative frame 23 is pulled downward against the bias of the plurality of mounting springs 48, the plurality of mounting springs 48 are removed downward from the opening 12, and the second While rotating the radiator 22 so that the radiator fin portion 39 faces upward, the radiator 22 is removed downward from the opening 12, and the power supply unit 26 is removed downward from the opening 12. At this time, the leg portion 61 is projected downward on the tip end side of the power supply unit 26, but since the leg portion 61 and the side plate 58 are connected by the inclined portion 62, the leg portion 61 is placed above the ceiling member 11. The power supply unit 26 can be easily removed from the opening 12 without the legs 61 being caught by the arranged wiring or structure.

  The position of the lower surface 39a of the second radiation fin portion 39 may be at least the thickness of the ceiling member 11 from the upper surface of the flange 47 of the decorative frame 23. In the present embodiment, since the mounting spring 48 is used to install the lighting device 10, the lower surface 39a of the second radiating fin portion 39 interferes with the mounting spring 48 when the mounting spring 48 is placed along the decorative frame 23. It only needs to be in a position that does not. Further, the vertical and widthwise dimensions of the second radiating fin portion 39 may be smaller than the inner diameter of the opening 12 so that the second radiating fin portion 39 can be inserted into the opening 12 of the ceiling member 11.

  Next, FIG. 5 shows a second embodiment. The same components as those in the first embodiment are designated by the same reference numerals, and the description of the components and the effects will be omitted.

  FIG. 5 shows a lighting device 10 for an inclined ceiling in which the ceiling member 11 is inclined. The inclination angle of the ceiling member 11 is, for example, 20 ° with respect to the horizontal plane.

  The decorative frame 23 includes an upper plate 70 attached to a lower portion of the radiator 22, a frame portion 71 fitted in the opening 12 of the ceiling member 11, and a support portion 72 connecting the upper plate 70 and the frame portion 71. . The support portion 72 is provided perpendicular to the frame portion 71.

  A guide groove 73 is formed in the support portion 72 along the longitudinal direction (vertical direction) of the support portion 72. A mounting bracket 74 is slidably attached to the guide groove 73 of the support portion 72 along the guide groove 73. The upper part of the mounting bracket 74 is slidably connected to the guide groove 73, and the lower part of the mounting bracket 74 can project laterally from the support portion 72 with the upper part as a fulcrum. Then, after inserting the decorative frame 23 together with the power supply unit 26 and the radiator 22 into the opening 12 of the ceiling member 11, by sliding the mounting bracket 74 located above the upper surface of the ceiling member 11 downward, the mounting bracket The lower part of the 74 projects laterally and is caught on the ceiling member 11, and the upper part of the mounting bracket 74 is pressed against and fixed to the support part 72. As a result, the ceiling member 11 is sandwiched and held between the frame portion 71 and the mounting bracket 74.

  The lower portion of the reflector 25 is formed in an inclined shape so as to be parallel to the frame portion 71 in accordance with the inclination of the ceiling member 11.

  Then, in the lighting device 10 of the ceiling mounting structure using the mounting bracket 74, the lower surface 39a of the second radiating fin portion 39 may be limited to a position where it does not interfere with the mounting spring 48 as in the first embodiment. Instead, the lower surface 39a of the second radiating fin portion 39 can be located on the lower side of the first radiating fin portion 38, so that the second radiating fin portion 39 can be made larger and the heat radiation effect can be improved. In this case as well, the vertical and widthwise dimensions of the second radiating fin portion 39 may be smaller than the inner diameter of the opening 12 so that the second radiating fin portion 39 can be inserted into the opening 12 of the ceiling member 11.

  Further, in the lighting device 10, the second heat radiation fin portion 39 and the power supply unit 26 are arranged so as to face the rising side of the ceiling member 11 in the inclination direction.

  If the second heat dissipating fin portion 39 and the power supply unit 26 are arranged toward the descending side of the ceiling member 11 in the direction of inclination, the power supply unit 26 with the tip side of the power supply unit 26 resting on the ceiling member 11 will be described. The temperature of the upper side of the inclined power supply unit 26 is likely to rise, and the life of the power supply unit 26 is likely to be affected. In order to prevent this, the power supply unit 26 must be lengthened, and the power supply unit 26 becomes large.

  By disposing the second radiating fin portion 39 and the power supply unit 26 toward the rising side of the ceiling member 11 in the inclination direction, the inclination of the power supply unit 26 with the tip side of the power supply unit 26 placed on the ceiling member 11 can be prevented. It is possible to reduce the unevenness of the temperature distribution of the power supply unit 26 and extend the life of the power supply unit 26. Further, it is not necessary to lengthen the power supply unit 26, and the power supply unit 26 can be downsized.

  Note that the lighting device 10 may have a light emitting unit attached to the installation portion 37 of the radiator 22 without using the lamp device 20, the socket 24, or the like.

  Although some embodiments of the present invention have been described, these embodiments are presented as examples 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 spirit of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are also included in the invention described in the claims and the scope equivalent thereto.

10 lighting equipment
11 Ceiling material
12 openings
22 Radiator
26 power supply unit
33 Light emitting part
37 Installation section
38 First radiating fin section
39 2nd radiation fin A Virtual line P Support point

Claims (2)

With a light emitting part;
An installation part on which the light emitting part is installed, a plurality of first radiating fin parts projecting upward from the installing part, and a plurality of first radiating fin parts projecting laterally from an upper part of the plurality of first radiating fin parts. has a second heat dissipating fin portion, a second radiation fin portion of the plurality with is provided continuously in a straight line from the first heat radiating fin portion of the plurality, the plurality of second heat radiating fin portion A lower surface of the heat radiating body in which tip ends of the second heat radiating fin portions located on both sides of the second heat radiating fin portion located on the center side are inclined upward ;
A power supply unit for supplying power to the light emitting unit;
A lighting device comprising: With a light emitting part;
An installation part on which the light emitting part is installed, a plurality of first radiating fin parts projecting upward from the installing part, and a plurality of first radiating fin parts projecting laterally from an upper part of the plurality of first radiating fin parts. And a plurality of second radiating fin portions, the plurality of second radiating fin portions are linearly provided continuously from the plurality of first radiating fin portions, and the plurality of second radiating fin portions are provided. The lower surface of the second heat radiation fin portion located on both sides of the lower surface of the second heat radiation fin portion is inclined upward at the tip end side of the second heat radiation fin portion, and is rotated about the edge of the opening of the ceiling member as a fulcrum. A radiator that can be moved and inserted into the opening and is provided in a shape that fits within an imaginary line drawn by the diameter dimension of the opening around the fulcrum of the edge of the opening ;
A power supply unit for supplying power to the light emitting unit;
Lighting apparatus characterized by comprising a.

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