JP5360965B2 - lighting equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire suppressing generation of shadows, preventing reduction of brightness of a fitting surface, improving the appearance and simultaneously achieving glare reduction and assurance of brightness. <P>SOLUTION: The luminaire 10 includes a luminaire body 11 constituted of an impermeable material enclosure, LEDs (light-emitting diodes) 12 disposed in one direction on the luminaire body 11 and a permeable cover 13 covering most of the luminaire body 11. The cover 13 is formed such that at least an area upon which light from the LED 12 is directly incident is diffusible, and a remaining area is transparent. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a lighting device such as a spotlight, a wall light, and a pendant that is directly attached to a ceiling or a wall surface for illumination.

  As an example of a conventional lighting fixture, a combination of a light bulb-type fluorescent lamp and a light emitting diode and attached to a cover, that is, a globe is known (for example, see Patent Document 1).

  The lighting fixture disclosed in Patent Document 1 performs illumination that does not give glare to the user by irradiating light from a light bulb-type fluorescent lamp and light from a light-emitting diode through a globe having diffusibility. .

Japanese Patent Laying-Open No. 2003-297105 (FIG. 2, paragraph number 0032)

  However, since the lighting fixture disclosed in Patent Document 1 uses a diffusing globe for suppressing glare of light from the light emitting diode, light from the light emitting diode is almost irradiated in the forward direction. Thereby, there is a possibility that a shadow may be generated near the center of the globe.

  In order to eliminate such shadows, it is effective to increase the outer shape of the globe. However, if the globe is enlarged, the entire lighting fixture is not enlarged and compact. Further, since the light spreads in the forward direction, there is a possibility that the brightness of the mounting surface becomes darker than the brightness of the globe.

  Moreover, in the lighting fixture disclosed in Patent Document 1, when an incandescent lamp or a fluorescent lamp, which is a light source, is arranged in one direction of the fixture body, the light source can be seen through the transparent portion of the glove, thereby reducing glare. There is a concern that the appearance may be deteriorated without being suppressed.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to improve the appearance by preventing the occurrence of shadows and preventing the brightness of the mounting surface from becoming dark. Another object of the present invention is to provide a lighting apparatus that can achieve both a dazzle cut and a sufficient brightness.

In the present invention, an LED and an outer surface of an impermeable material, a mounting surface on which the LED is mounted in one direction, and an instrument body having a mounting portion on the opposite side of the mounting surface, and transparency. a cover together with the LED have to cover a large portion of the instrument body, Ru provided with, met luminaire mounting portion of the instrument body is directly attached to a ceiling or a wall, the cover is to diffuse the light A diffusion cover part that has both the light diffusibility to transmit and the light reflection characteristic that reflects light, and is connected to the diffusion cover part, and is connected to the diffusion cover part. A transparent cover portion that is located on the attachment portion side and transmits the reflected light reflected by the inner surface of the diffusion cover portion to indirectly illuminate the attachment portion side, and the diffusion cover portion and the transparent The boundary with the cover is from the mounting surface Is located on the mounting portion side, the LED is mounted on the mounting surface at a position where it cannot be directly seen from the outside of the cover, and a portion of the outer shell of the instrument body that faces the transparent cover portion is mounted. the reflecting surface der Rukoto characterized.

In the present invention, the light from the LED is diffused by the diffusive cover to which the light is directly incident, irradiates the outside, reflects, passes through the transparent cover, and irradiates the mounting surface side.
Therefore, even if the light from the LED is intensively irradiated in the forward direction, it is possible to suppress the shadow that appears on the cover.

In the present invention, the light from the LED is reflected and then transmitted through the transparent cover to irradiate the mounting surface side.
Accordingly, it is possible to coordinate light by setting the brightness of the mounting surface equal to the brightness of the cover.

In the present invention, diffused light and reflected light are created based on the light from the LED, and only the position that directly enters the eye is used as a diffusive cover, and the other part is used as a transparent cover.
Therefore, the appearance can be improved and the dazzling cut and the brightness can be ensured at the same time.

In the present invention, the reflected light from the LED is reflected by the reflecting surface of the instrument body to create light that irradiates the mounting surface side.
Therefore, the brightness of the mounting surface can be made closer to the brightness of the cover by further increasing the amount of light on the mounting surface.

According to the lighting apparatus of the present invention, an instrument body composed of an outer wall of an impermeable material, an LED disposed in one direction of the instrument body, a cover that has transparency and covers most of the instrument body, The cover is formed so that at least the region where the light from the LED is directly incident is diffusive, and the other region is transparent.
Thereby, generation | occurrence | production of a shadow can be suppressed, and it can prevent that the brightness of an attachment surface becomes dark, can aim at the improvement of an external appearance, and can make a dazzle cut and ensuring of brightness compatible. It has the effect.

Sectional drawing in the wall surface attachment state of the lighting fixture of 1st Embodiment which concerns on this invention Partial enlarged view of the luminaire shown in FIG. Explanatory drawing of the action of light in the lighting fixture shown in FIG. The partial enlarged view equivalent to FIG. 2 of the lighting fixture of 2nd Embodiment which concerns on this invention The partial enlarged view equivalent to FIG. 2 of the lighting fixture of 3rd Embodiment which concerns on this invention Sectional drawing equivalent to FIG. 3 of the lighting fixture of 4th Embodiment which concerns on this invention

  Hereinafter, lighting fixtures according to a plurality of embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, a lighting fixture 10 according to a first embodiment of the present invention includes a fixture main body 11 constituted by an outer wall of an impermeable material, and a plurality of LEDs (light emitting devices) arranged in one direction of the fixture main body 11. (Diode) 12 and a cover 13 that has transparency and covers most of the instrument body, and is electrically connected to a hooking closet (not shown) provided on the wall surface 1.

  The instrument body 11 is made of a metal and has a non-transparent box shape. The appliance main body 11 includes a lighting circuit 14 that is a DC power supply circuit for supplying a direct current to the LED 12, and has a wiring space 15 for routing power supply wiring therein. The instrument main body 11 is painted white, and the mounting portion 16 on the right side in FIG. 1 is brought into contact with the wall surface 1 as the mounting surface.

  The LED 12 is mounted on an LED substrate (not shown), and is assembled on the left side in FIG. The LED 12 is electrically connected to the lighting circuit 14. The lighting circuit 14 is electrically connected to the hooking rosette to receive power. For example, two LEDs 12 are arranged vertically in two rows.

  The cover 13 is formed in a spherical shape that covers almost the entire instrument body 11 using a polymer material such as plastic as a raw material. The cover 13 has a hemispherical diffusion cover portion 19 on the side opposite to the attachment portion with a boundary line 18 of the LED light direct irradiation range corresponding to the LED mounting surface 17 on one side of the instrument body 11 as a boundary. The cover 13 has a hemispherical transparent cover portion 20 that is symmetrical with the diffusion cover portion 19 on the attachment portion side with the boundary line 18 as a boundary. The cover 13 may be formed in an arbitrary shape considering a design surface such as a box shape with a bottom or a semi-cylindrical shape instead of the spherical shape.

  As shown also in FIG. 2, the diffusion cover part 19 has a semi-reflective characteristic with a predetermined thickness and also has a diffusibility. The diffusion cover part 19 diffuses the emitted light from the LED 12 to irradiate the outside and reflect it.

  The transparent cover part 20 has the same thickness as the diffusion cover part 19 and is made of a simple transparent plate without diffusibility.

At this time, since the diffusion cover part 19 covers almost the entire instrument body 11, the LED 12 cannot be directly seen from the position of the line of sight A through the diffusion cover part 19.
Therefore, it is possible to provide a clean appearance by hiding the internal components such as the LED 12 and the instrument body 11 from the outside.

  Next, the effect | action of the light in the lighting fixture 10 is demonstrated.

  As shown in FIG. 3, the emitted light α <b> 1 emitted from the LED 12 by energization has directivity and proceeds toward the diffusion cover portion 19 on the side opposite to the attachment portion with respect to the boundary line 18 of the LED light direct irradiation range. Then, the emitted light α1 from the LED 12 is transmitted while being diffused by the diffusion cover part 19, and becomes the diffused light α2 to irradiate the irradiated surface such as the floor surface.

  A part of the emitted light α1 from the LED 12 is reflected on the inner surface of the diffusion cover portion 19 and converted into reflected light α3. The reflected light α3 travels toward the transparent cover portion 20 disposed on the attachment portion 16 side with respect to the boundary line 18 of the LED light direct irradiation range.

  The reflected light α3 that has traveled toward the transparent cover portion 20 passes through the transparent cover portion 20 and irradiates the wall surface 1 to perform indirect illumination.

In the luminaire 10 of the first embodiment, the light from the LED 12 is diffused by the diffusion cover part 19 to which the light is directly incident and radiates to the outside and is reflected and transmitted through the transparent cover part 20 to illuminate the wall surface 1. To do.
Therefore, even if the light from the LED 12 is intensively irradiated in the forward direction, the shadow reflected on the cover 13 can be suppressed.

In the lighting fixture 10 of the first embodiment, the light from the LED 12 is reflected and transmitted through the transparent cover portion 20 to irradiate the wall surface 1.
Therefore, it is possible to coordinate the light by setting the brightness of the wall surface 1 to be equal to the brightness of the cover 13.

In the luminaire 10 of the first embodiment, the diffused light α2 and the reflected light α3 are created based on the light from the LED 12, and the diffused cover part 19 is used only at a position where it directly enters the eyes, and the other part is the transparent cover part 20. It was.
Therefore, it is possible to improve the appearance and to achieve both a dazzle cut and a brightness ensure.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment of this invention is demonstrated. In the following embodiments, components that are the same as those in the first embodiment described above or functionally similar components are simplified or omitted by giving the same reference numerals or equivalent symbols in the drawings. To do.

  As shown also in FIG. 4, the lighting fixture 30 of 2nd Embodiment of this invention is the spreading | diffusion which formed the rough surface part 32 by giving the rough surface process of an uneven surface shape to the cover 31 at the back surface of a transparent board member. A cover portion 33 is provided.

  The emitted light α1 from the LED 12 is transmitted while being diffused by the rough surface portion 32 of the diffusing cover portion 33, and becomes diffused light α2 that irradiates the irradiated surface such as the floor surface and is converted into reflected light α3.

In the lighting fixture 30 of 2nd Embodiment, the rough surface part 32 was formed in the diffusion cover part 33 of the cover 31 by giving a rough surface process to the back surface of a transparent board member.
Accordingly, since the diffusibility can be imparted by mechanical processing as compared with the first embodiment, the cover 31 can be easily formed.

(Third embodiment)
Next, the lighting fixture of 3rd Embodiment of this invention is demonstrated.

  As shown also in FIG. 5, in the lighting fixture 40 of the third embodiment of the present invention, the diffusion cover portion 42 of the cover 41 coats a resin member 44 having diffusibility on the back surface of the transparent glass plate 43. Is formed.

  The emitted light α1 from the LED 12 is transmitted while being diffused by the resin member 44 of the diffusion cover portion 42, and becomes diffused light α2 that irradiates the irradiated surface such as the floor surface and is converted into reflected light α3.

In the lighting fixture 40 of 3rd Embodiment, it formed by coating the diffusion cover part 42 of the cover 41 with the resin member 44 which has a diffusibility on the back surface of the transparent glass plate 43. FIG.
Therefore, brighter illumination can be performed by the high transparency of the glass plate 43.

(Fourth embodiment)
Next, the lighting fixture of 4th Embodiment of this invention is demonstrated.

  As shown also in FIG. 5, the luminaire 50 according to the fourth embodiment of the present invention has a mirror finish by forming a reflective surface 51 on the outer surface of the fixture body 11 facing the transparent cover portion 20 of the cover 13. .

  The reflected light α3 reflected on the inner surface of the diffusing cover portion 19 is transmitted through the transparent cover portion 20 disposed on the mounting surface side with respect to the boundary line 18 of the LED light direct irradiation range and irradiates the wall surface 1. At the same time, a part of the reflected light α4 travels toward the instrument body 11, is reflected by the reflection surface 51 of the instrument body 11, passes through the transparent cover part 20, and irradiates the wall surface 1.

In the luminaire 50 of the fourth embodiment, a part of the reflected light α4 from the LED 12 is reflected by the reflecting surface 51 of the fixture body 11 to create light that irradiates the wall surface 1.
Therefore, the brightness of the wall surface 1 can be made closer to the brightness of the cover 13 by increasing the amount of light to the wall surface 1.

  In addition, the instrument main body 11, the cover 13, 31, 41, etc. which were used in each said embodiment are not limited to what was illustrated, and can be changed suitably.

1 Wall surface (mounting surface)
10 Lighting equipment 11 Equipment body 12 LED
13 Cover 30 Lighting fixture 31 Cover 40 Lighting fixture 41 Cover 50 Lighting fixture 51 Reflecting surface

Claims (1)

LED,
An instrument body having a mounting surface on which the LED is mounted in one direction and having a mounting portion on the opposite side of the mounting surface, the outer surface of the impermeable material,
A cover that has transparency and covers most of the instrument body with the LED ;
Ru with a met luminaire mounting portion of the instrument body is directly attached to a ceiling or a wall,
The cover is
A diffusion cover part that has both light diffusion transparency for diffusing and transmitting light, and light reflection characteristics for reflecting light, and direct light from the LED is incident thereon,
A transparent cover portion that is connected to the diffusion cover portion, is located closer to the attachment portion than the diffusion cover portion, and transmits the reflected light reflected by the inner surface of the diffusion cover portion to indirectly illuminate the attachment portion side When,
Have
The boundary between the diffusion cover part and the transparent cover part is located closer to the mounting part than the mounting surface,
The LED is mounted on the mounting surface at a position where it cannot be directly seen from the outside of the cover,
In the outer shell of the instrument body, luminaire portion facing the transparent cover is characterized in reflecting surfaces der Rukoto.

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