JP2012009168A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of efficiently utilizing light from an LED package.SOLUTION: The lighting fixture 10 is provided with an LED package 14 and a cover 15 which has an end-spreading shape and on the top of which the LED package is located. The cover 15 is provided with an optical treatment part 30 capable of refracting and transmitting the light from the LED package and moreover capable of making specular reflection and diffusion.

Description

  The present invention relates to a lighting fixture that is directly attached to a ceiling construction surface using an LED package as a light source.

  2. Description of the Related Art Conventionally, there has been known a luminaire including a cover for emitting and diffusing light from an LED package to the side and front in front of the LED package (for example, see Patent Document 1).

Japanese Patent Laying-Open No. 2010-15798 (FIG. 2, paragraph 0025)

The light emitting diode included in the LED package has a high light directivity, a high luminance, and a low solid angle light source. Therefore, when applied to a luminaire, light can be emitted in a single direction, but control in the lateral direction is difficult compared to the case where a conventional incandescent lamp, HID lamp, or the like is used as a light source.
The lighting fixture described in Patent Document 1 described above can make the LED package a surface light source instead of a point light source by emitting light from the LED package to the side and front by the cover. Moreover, the light distribution pattern close | similar to the conventional incandescent lamp etc. is obtained by diffusing the light from LED package with a cover.
However, the lighting fixture described in Patent Document 1 described above has room for further improvement in that the light from the LED package is efficiently used.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting fixture that can use light from an LED package more efficiently.

  The luminaire according to the present invention includes an LED package and a cover having a divergent shape and disposing the LED package on the top, the cover being capable of refracting and transmitting light from the LED package, And an optical processing unit capable of specular reflection and diffusion.

  The lighting fixture which concerns on this invention is equipped with the glove which covers a cover.

  In the lighting fixture according to the present invention, the glove is attached to the cover via the waterproof packing.

  According to the lighting fixture concerning this invention, there exists an effect that the light from an LED package can be utilized still more efficiently.

The side view which cut | disconnected the glove of the lighting fixture of one Embodiment which concerns on this invention perpendicularly | vertically FIG. 1 is a partially broken external perspective view seen from obliquely below with the glove of the lighting apparatus of FIG. 1 removed. FIG. 1 is a partially broken external perspective view seen from obliquely below with a glove attached to the lighting apparatus of FIG. 1 is a vertical sectional view for explaining the optical characteristics of the lighting apparatus of FIG.

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described with reference to the drawings.
A lighting fixture 10 according to an embodiment of the present invention includes a fixture main body 11, a power supply device 12 accommodated in the fixture main body 11, and a plurality of LED packages 14 mounted on an LED substrate 13 on the lower side of the fixture main body 11. The LED 15 is directly attached to the ceiling construction surface 1 with a cover 15 attached to the appliance main body 11 and a glove 17 attached to the appliance main body 11 through the waterproof packing 16 so as to cover the cover 15.

  As shown in FIG. 1, the instrument main body 11 is hooked on a hooking metal fitting (not shown) in which an attachment holder 18 attached to the upper end surface is installed on the ceiling construction surface 1. Thus, an external circuit (not shown) arranged above the ceiling construction surface 1 through the mounting holder 18 is electrically connected to the power supply device 12. The cover 15 is made of transparent glass or resin having a translucent shape and is attached to the bottom of the instrument body 11. The cover 15 may be a yellow or blue color according to the scene. The globe 17 is made of a resin having translucency, such as white or milky white and thin, and is formed in a substantially U shape in a vertical sectional view, and has a mounting cylinder portion 19 on an upper end surface thereof.

  As shown in FIG. 2, the instrument body 11 has a glove mounting opening 20 at the lower end using a hard resin material having insulation properties, and has a ceiling plate 21 and a peripheral plate 22. It is formed in a cylindrical shape. The instrument main body 11 has a round hole 23 for attaching the attachment holder 18 to the central portion of the top plate 21. The power supply device 12 is mounted on a partition plate 24 provided at the lower end of the instrument body 11. The power supply device 12 includes a plurality of electrical components 25 that generate power for supplying power to the LED board 13. The power supply device 12 has an upstream side electrically connected to the mounting holder 18 via a power supply terminal block (not shown), and a downstream side electrically connected to a printed circuit (not shown) on the LED board 13. The power supply device 12 includes a heat sink 26 on the outer peripheral portion for radiating heat generated by the electrical component 25.

The LED substrate 13 is attached to the lower side of the partition plate 24 of the instrument main body 11. The LED board 13 has a circular outer shape, and LED packages 14 are mounted at predetermined plural positions on the lower surface thereof.
The cover 15 includes a spherical side plate 27 and a bottom plate 28 having a predetermined refractive index and transmittance, and has a top opening 29 at the top. The cover 15 is attached to the outside of the LED substrate 13 so that the top opening 29 surrounds the plurality of LED packages 14. The cover 15 has an optical processing unit 30 formed on the inner surface of the side plate 27. The optical processing unit 30 is formed by arranging a plurality of dot portions 31 made of uneven surfaces of the same shape or different shape on the inner surface of the side plate 27 in a grid pattern.
The optical processing unit 30 may be formed on the outer surface of the side plate 27 of the cover 15. The optical processing unit 30 may be formed on the inner surface or the outer surface of the bottom plate 28 of the cover 15. And the optical process part 30 may be shape | molded in a satin shape.

  As shown in FIG. 3, the glove 17 is inserted into the inner peripheral side of the glove mounting opening 20 of the instrument body 11 after the waterproof packing 16 is fitted on the outer periphery of the mounting cylinder 19 on the upper end surface. It is attached. For this reason, the globe 17 is disposed close to the bottom plate 32 so that the bottom plate 32 contacts the bottom plate 28 of the cover 15. Since the globe 17 is translucent white or milky white and covers the cover 15, it can be concealed so that the inner peripheral side of the instrument body 11 including the cover 15 is not directly viewed from the floor surface side. The waterproof packing 16 is elastically deformed between the peripheral plate 22 of the instrument main body 11 and the mounting cylinder portion 19 of the globe 17 and is in close contact with the both, so that moisture does not enter inside the instrument main body 11 and the globe 17. Can be prevented.

Next, the optical characteristics of the lighting fixture 10 will be described.
As shown in FIG. 4, when power from an external circuit is supplied to the power supply device 12 through the mounting holder 18, a direct current is supplied from the power supply device 12 to the LED substrate 13, and the LED package 14 emits light. Let As indicated by a broken line in FIG. 4, the light traveling from the LED package 14 toward the bottom plate 28 of the cover 15 is refracted by the bottom plate 28 of the cover 15 and then the bottom plate 28 of the cover 15 and the globe 17. By being transmitted through the bottom plate 32, the refracted and transmitted light α1 is generated. Then, the refracted and transmitted light α1 is emitted toward the floor surface below the lighting fixture 10.

  Of the light from the LED package 14, the light traveling toward the side plate 27 of the cover 15 is refracted by the optical processing unit 30 on the inner surface of the side plate 27 of the cover 15 and then transmitted through the side plate 27. Is generated in the refracted and transmitted light α2 emitted toward the side of. The refracted and transmitted light α2 passes through the side of the globe 17 and is emitted to the side of the lighting fixture 10.

  Of the light from the LED package 14, the light traveling toward the side plate 27 of the cover 15 is reflected by the optical processing unit 30 on the inner surface of the side plate 27 of the cover 15 and then diffused toward the bottom plate 28 of the cover 15. As a result, regular reflection diffused light α3 is generated. Then, the specularly reflected diffused light α3 traveling toward the bottom plate 28 of the cover 15 is refracted at the bottom plate 28 of the cover 15 and then transmitted through the bottom plate 28 of the cover 15 and the bottom plate 32 of the globe 17 so that the refracted transmitted light α4. Is emitted toward the floor surface below the lighting fixture 10.

  As described above, in the luminaire 10, the optical processing unit 30 of the cover 15 can refract and transmit light from the LED package 14, and can specularly reflect and diffuse. Thereby, the light from the LED package 14 is refracted and transmitted, further regularly reflected and diffused, whereby the light from the LED package 14 is emitted in all directions and can be used efficiently.

Therefore, in the luminaire 10 of this embodiment, the light from the LED package 14 is refracted and transmitted, and specularly reflected and diffused by the optical processing unit 30 of the cover 15.
Thereby, in the lighting fixture 10 of this one embodiment, the light from the LED package 14 can be emitted in all directions and used more efficiently than the conventional one.

Moreover, in the lighting fixture 10 of this one embodiment, the cover 15 is covered with the globe 17.
Thereby, in the lighting fixture 10 of this one Embodiment, since the glove | globe 17 has covered the cover 15, it can conceal so that the inner peripheral side of the fixture main body 11 including the cover 15 may not be seen directly from the floor surface side.

And in the lighting fixture 10 of this one embodiment, the waterproof packing 16 is elastically deformed and attached between the peripheral plate 22 of the fixture body 11 and the mounting cylinder portion 19 of the globe 17.
Thereby, in the lighting fixture 10 of this one embodiment, the waterproof packing 16 can prevent moisture from entering the inside of the fixture body 11 and the globe 17, so that it can correspond to an installation location that requires waterproofness.

  In addition, the instrument main body, the power supply device, the LED package, and the like exemplified in the above-described embodiment are not limited to those exemplified, and can be appropriately changed.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 14 LED package 15 Cover 16 Waterproof packing 17 Globe 30 Optical processing part

Claims (3)

An LED package;
A cover having a shape that spreads at the end, and the LED package is disposed on the top;
The said cover is a lighting fixture which has the optical processing part which can refract and permeate | transmit the light from the said LED package, and can reflect and diffuse regularly. The lighting fixture according to claim 1,
A lighting fixture comprising a glove that covers the cover. The lighting fixture according to claim 2,
The glove is a lighting fixture that is attached to the cover via a waterproof packing.

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