JP2016066501A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of improving efficiency and also facilitating light distribution control.SOLUTION: A luminaire 10 comprises an instrument body 11, a light emission module 12, and a reflector 13. The light emission module 12 has a substrate 30 arranged at an instrument body 11 and a light emission element 31 mounted on the substrate 30. The reflector 13 is fitted to the instrument body 11. The reflector 13 has a reflecting mirror part 40 and a reflecting frame part 41. The reflecting mirror part 40 is provided with an emission hole 43 for emitting light from the light emission element 31 and also provided with a first reflecting surface 45 controlling distribution of the light emitted from the emission hole 43. The reflecting frame part 41 is cylindrical, has the reflecting mirror part 40 formed in one body on one end side and an irradiation opening 46 formed on the other end side, and is provided with a second reflecting surface 47 for controlling distribution of light emitted from the reflecting mirror part 40 on an inner surface from the one end side to the other end side.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a lighting device using a light emitting module.

  Conventionally, for example, in a lighting device such as a downlight, a light emitting module having a light emitting element is attached to the lower part of the fixture body, a reflecting mirror for controlling the light distribution of the light emitted from the light emitting element is attached, and further installed on the ceiling A cylindrical decorative frame is attached.

  In such an illuminating device, since light emitted from the light emitting element is performed by two different parts, that is, the reflecting mirror and the inner surface of the decorative frame, light loss occurs between the reflecting mirror and the decorative frame, resulting in efficiency. It may decrease, and light distribution control may be difficult.

JP 2013-182734 A

  The problem to be solved by the present invention is to provide an illumination device that can improve efficiency and facilitate light distribution control.

  The illuminating device of embodiment is provided with an instrument main body, a light emitting module, and a reflector. The light emitting module has a substrate disposed on the instrument body and a light emitting element mounted on the substrate. The reflector is attached to the instrument body. The reflector has a reflecting mirror part and a reflecting frame part. The reflecting mirror portion is provided with an emission hole for emitting light from the light emitting element and a first reflecting surface for controlling the light distribution of the light emitted from the emission hole. The reflection frame portion is cylindrical, and the reflection mirror portion is integrally formed on one end side, and an irradiation opening is formed on the other end side, and emitted from the reflection mirror portion to the inner surface extending from one end side to the other end side. A second reflecting surface for controlling the light distribution is provided.

  According to the present invention, it can be expected that efficiency can be improved and light distribution control can be facilitated.

It is sectional drawing of the illuminating device which shows one Embodiment. It is a perspective view of the decomposition | disassembly state of an illuminating device same as the above. It is a perspective view of the assembly state of an illuminating device same as the above. It is a perspective view of the reflector of an illuminating device same as the above.

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

  The illumination device 10 is a downlight that is embedded and installed in an embedded hole formed in a ceiling member, for example.

  The illuminating device 10 includes an instrument body 11, a light emitting module 12 disposed on the lower surface of the instrument body 11, a reflector 13 attached to a lower portion of the instrument body 11, a translucent cover 14 attached to the reflector 13, and a reflector 13. Are attached to the ceiling member.

  The instrument body 11 is a heat radiator made of, for example, aluminum die casting. The instrument body 11 has a flat base 20, a flat mounting surface 21 on which the light emitting module 12 is disposed is formed on the lower surface of the base 20, and a plurality of heat radiating fins 22 project from the upper surface of the base 20. ing.

  A plurality of protrusions 23 that are positioned on the basis of the outer shape of the light emitting module 12 are formed on the periphery of the mounting surface 21, and a wiring hole 24 that penetrates the base 20 is formed. Further, an annular protrusion 25 for attaching the reflector 13 is formed on the periphery of the attachment surface 21. Insertion holes 26 through which screws for fixing the reflector 13 are inserted are formed at a plurality of locations on the protrusion 25.

  A top plate 27 is attached to the upper part of the instrument body 11, and a power supply unit 28 is attached to the top plate 27. The power supply unit 28 converts AC power into predetermined DC power and supplies it to the light emitting module 12.

  The light emitting module 12 includes a substrate 30 and a plurality of light emitting elements 31 mounted on the substrate 30. The light emitting elements 31 are arranged at predetermined intervals in the circumferential direction around the center of the light emitting module 12. As the light emitting element 31, for example, an SMD (Surface Mount Device) package in which an LED is housed in a package and sealed with a phosphor layer containing a phosphor is used. The light emitting element 31 may be a COB module in which a plurality of LEDs mounted on a substrate are sealed with a translucent resin containing a phosphor, or other light emitting elements such as an organic EL other than LEDs are used. Also good.

  Further, the reflector 13 integrally has a function of a reflecting mirror that controls the light distribution of the light emitting element 31, and a function of a decorative frame that supports the fixture body 11 and is installed in the embedding hole of the ceiling member. Yes.

  The reflector 13 is formed of a metal material such as aluminum die casting or a resin material, for example. The reflector 13 includes a reflecting mirror part 40, a reflecting frame part 41, and a contact part 42. The reflecting mirror part 40, the reflecting frame part 41, and the contact part 42 are integrally formed.

  The reflecting mirror section 40 is provided with a plurality of emission holes 43 that face the light emitting elements 31 and emit light from the light emitting elements 31. The emission holes 43 are formed at a predetermined interval in the circumferential direction with the center portion of the reflecting mirror portion 40 as the center. Concave portions 44 are formed corresponding to the positions of the respective emission holes 43, and a first reflection surface 45 for controlling the light distribution of the light emitted from the emission holes 43 is formed on the inner surface of the concave portion 44. The first reflecting surface 45 is composed of a plurality of surfaces that expand from the exit hole 43 along the exit direction. A reflective film is formed on the first reflective surface 45 by, for example, vapor deposition, and the first reflective surface 45 is formed as a mirror surface or a white surface.

  The reflection frame portion 41 is formed in a cylindrical shape, and is formed to increase in diameter from the upper end side that is one end side to the lower end side that is the other end side. In the reflection frame portion 41, the reflecting mirror portion 40 is integrally formed on the upper end side, and the irradiation opening 46 is formed on the lower end side.

  On the inner surface of the reflection frame portion 41, a second reflection surface 47 for controlling the light distribution of the light emitted from the emission hole 43 and the light reflected by the first reflection surface 45 is formed. A reflective film is formed on the second reflective surface 47 by, for example, vapor deposition, and the second reflective surface 47 is formed as a mirror surface or a white surface.

  A step portion 48 in which the translucent cover 14 is disposed is formed between the reflection frame portion 41 and the reflection mirror portion 40, that is, between the first reflection surface 45 and the second reflection surface 47. A plurality of locking holes 49 for locking the optical cover 14 are formed.

  At the upper end of the reflection frame portion 41, an annular contact portion 50 that contacts the protruding portion 25 of the instrument body 11 is formed. An edge 51 that is attached to the lower surface of the ceiling member by concealing the embedding hole of the ceiling member is formed around the lower end of the reflection frame portion 41.

  A plurality of attachment holes 52 into which screws inserted through the insertion holes 26 of the instrument body 11 are screwed are formed on the outer peripheral surface of the reflection frame portion 41. The instrument body 11 and the reflector 13 are fastened and fixed by screws. Furthermore, a plurality of spring attachment portions 53 for attaching the attachment spring 15 are formed on the outer peripheral surface of the reflection frame portion 41.

  The contact part 42 protrudes from the upper surface of the reflecting mirror part 40. That is, the contact portion 42 is formed in an annular shape around the emission holes 43. Further, the contact part 42 is also formed at the center of the reflecting mirror part 40. In the assembled state of the lighting device 10, the contact portion 42 contacts the substrate 30, and the contact portion 42 presses the substrate 30 against the instrument body 11.

  Further, the translucent cover 14 is formed in a disc shape with, for example, acrylic resin or glass. The translucent cover 14 is formed in an outer shape that can be inserted from the irradiation opening 46 of the reflector 13 and disposed on the stepped portion 48. A plurality of locking portions 60 are projected from the periphery of the translucent cover 14. These locking portions 60 are inserted into the locking holes 49 of the reflector 13 and locked to the edges of the locking holes 49.

  The attachment spring 15 is constituted by a leaf spring. The mounting spring 15 is inserted into the embedding hole of the ceiling member together with the reflector 13 in a state of being elastically deformed along the side surface of the reflector 13, and is expanded to the side above the ceiling member to be on the upper surface side of the ceiling member. The lighting device 10 is brought into contact with the ceiling member and held.

  In the illuminating device 10 configured as described above, the contact portion 42 of the reflector 13 contacts the substrate 30, and the contact portion 42 presses the substrate 30 against the instrument main body 11, thereby thermally connecting the substrate 30 and the instrument main body 11 to each other. It is joined to. The light emitting module 12 is covered with the reflecting mirror part 40 of the reflector 13, and each light emitting element 31 faces each emission hole 43 of the reflecting mirror part 40. The lower surface of the reflecting mirror part 40 is covered with the translucent cover 14.

  Then, by supplying power from the power supply unit 28 to the light emitting element 31 of the light emitting module 12, the light emitting element 31 emits light. The light of the light emitting element 31 is emitted from the emission hole 43 to the concave portion 44 of the reflecting mirror portion 40, a part of the light emitted to the concave portion 44 is directly incident on the translucent cover 14, and the other light is the first reflecting surface. The light is reflected by 45 and enters the translucent cover 14. The light incident on the translucent cover 14 is transmitted through the translucent cover 14 and emitted into the reflective frame portion 41, and part of the light emitted into the reflective frame portion 41 is directly emitted from the irradiation opening 46 and others. Is reflected by the second reflecting surface 47 and emitted from the irradiation opening 46.

  Therefore, the light emitted from the irradiation opening 46 is light whose light distribution is controlled by the first reflecting surface 45 of the reflecting mirror portion 40 and the second reflecting surface 47 of the reflecting frame portion 41.

  According to the illuminating device 10 of the present embodiment, since the reflecting mirror part 40 having the first reflecting surface 45 and the reflecting frame part 41 having the second reflecting surface 47 are integrally formed, the number of parts can be reduced. In addition, the number of assembly steps can be reduced. In addition, the optical loss between the reflecting mirror part 40 and the reflecting frame part 41 can be reduced, and the efficiency can be improved. Furthermore, since the first reflecting surface 45 and the second reflecting surface 47 are also integrated, light distribution control by the first reflecting surface 45 and the second reflecting surface 47 can be easily performed.

  Further, the heat generated by the light emitting element 31 is transmitted to the reflecting mirror part 40, so that the heat transmitted to the reflecting mirror part 40 is efficiently conducted to the reflecting frame part 41 and radiated from the reflecting frame part 41 to the air. The temperature rise of the light emitting element 31 can be suppressed.

  Further, since the contact portion 42 of the reflector 13 contacts the substrate 30 and presses the substrate 30 against the instrument body 11, the substrate 30 is thermally coupled to the instrument body 11, and the thermal conductivity from the substrate 30 to the instrument body 11 is achieved. By improving the heat dissipation performance, the temperature rise of the light emitting element 31 can be suppressed.

  In addition, since the translucent cover 14 can be inserted from the irradiation opening 46 side of the reflector 13 and attached to the reflector 13, the maintenance of removing the translucent cover 14 and the replacement of the translucent cover 14 are easy. It can be carried out.

  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
11 Instrument body
12 Light emitting module
13 Reflector
14 Translucent cover
30 substrates
31 Light emitting element
40 Reflector
41 Reflection frame
42 Contact area
43 Outgoing hole
45 First reflective surface
46 Irradiation aperture
47 Second reflective surface

Claims (3)

An instrument body;
A light emitting module having a substrate disposed on the instrument body and a light emitting element mounted on the substrate;
A reflecting mirror portion provided with an emission hole for emitting light from the light emitting element and having a first reflecting surface for controlling light distribution of light emitted from the emission hole; The reflection mirror portion is formed integrally with the other, an irradiation opening is formed on the other end side, and a second light distribution control of the light emitted from the reflection mirror portion on the inner surface extending from one end side to the other end side is performed. And a reflector attached to the instrument body;
An illumination device comprising: The lighting device according to claim 1, wherein the reflector is integrally formed with a contact portion that contacts the substrate and presses the substrate against the instrument body. The lighting device according to claim 1, further comprising: a translucent cover that is inserted into the reflector from the irradiation opening side and attached to the reflector.

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