JP2009129689A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture in which a plurality of light sources having different light colors are arranged repeatedly in a row, and light sources on end parts thereof are made inconspicuous. <P>SOLUTION: The lighting fixture 1 includes a body case 3 fixed on a fixing plate 2, light emitting diodes 5b, 5r and 5g of blue, red and green, mounted repeatedly in a row on a substrate 4, and a light-transmissive lid 6 covering the upper surface of the diodes. Covers 7 which attenuate light emitted from light emitting diodes 5b, 5g on the ends of the row are attached on corners of both ends of the lid 6 so as to cover the upper parts of the light emitting diodes 5b, 5g on the ends. Lights Lb, Lr, Lg emitted from light-emitting diodes of the middle part excluding the ends are mutually mixed after passing the lid 6 and turns to white. Light entering the covers 7 out of light Lbh, Lgt emitted from the diodes 5b, 5g on the ends is attenuated and simultaneously diffused, thereby making inherent light colors (blue, green) inconspicuous. The fixture can be adaptable to not only white color but each color tone obtained from a mixed color. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting fixture in which a plurality of light sources having different light colors are repeatedly arranged in a row.

  Conventionally, in indirect lighting in which light is applied to a wall surface, ceiling, floor, etc. and the interior is illuminated with the reflected light, small light sources such as light-emitting diodes are arranged in a single or a plurality of rows in a certain length. What was comprised in the lighting fixture which has this is known (for example, refer patent document 1).

Similarly, in a lighting fixture in which light emitting diodes are arranged in a row, the light colors of the light emitting diodes are arranged so as to repeat, for example, in the order of red, green, and blue. A lighting fixture configured to obtain a color (for example, white) is known (for example, see Patent Document 2).
Japanese Patent Laid-Open No. 2002-163907 JP 2005-174727 A

  A lighting fixture configured to repeatedly arrange a plurality of light emitting diode light sources having different light colors in a row as described above and mix light emitted from each light source to obtain a predetermined light color is provided by the lighting fixture. In the most part near the center, the light mixes well and a predetermined light color is obtained, but the light does not mix well at the end part, and the inherent light color of the light emitting diode located at the end part is conspicuous. There was a sense of discomfort.

  This will be specifically described with reference to FIG. The luminaire 100 shown in FIG. 6 includes a main body case 101 and blue, red, and green light emitting diodes 103b, 103r, and 103g that are mounted in a row on an elongated substrate 102 housed in the main body case 101. And a light-transmitting lid 104 that covers the upper surface of each light-emitting diode.

  The light emitting diodes 103b, 103r, and 103g are repeatedly arranged in the order of blue, red, and green, and the blue, red, and green light emitted from the light emitting diodes 103b, 103r, and 103g closer to the center of the lighting fixture 100. Lb, Lr, and Lg are mixed evenly in the space, and appear as white light to the user at a position away from the lighting apparatus 100. In FIG. 6, a mode in which light Lb, Lr, and Lg emitted from each of the light emitting diodes 103 b, 103 r, and 103 g travels in a substantially conical shape in the space is indicated by a two-dot chain line.

  However, the light Lg emitted from the light emitting diode 103g at the end is mixed evenly with the light Lb and Lr of other colors because there is no light adjacent to the outside as is apparent from FIG. It is difficult and the inherent light color (green) of the light emitting diode 103g is conspicuous, and the end of the luminaire 100 does not appear to be white, which makes the user feel uncomfortable.

  Therefore, the present invention provides a lighting fixture in which a plurality of light sources having different light colors are repeatedly arranged in a row so that the light color of the light source at the end does not stand out and does not give the user a sense of incongruity. The purpose is to provide.

  In order to achieve the above object, the invention of claim 1 is a lighting fixture comprising a plurality of light sources having different light colors arranged in a row, and includes a cover that covers the light sources located at the end of the row. The cover attenuates light emitted from the light source at the end.

  According to a second aspect of the present invention, in the lighting fixture according to the first aspect, the cover is subjected to a light diffusion process.

  According to a third aspect of the present invention, in the lighting apparatus according to the first or second aspect, the cover is colored in a complementary color of a light source that it covers.

  According to the first aspect of the present invention, since the light emitted from the light source at the end of the lighting fixture is attenuated by the cover, the light color of the light source at the end is not conspicuous, and the user does not feel uncomfortable.

  According to the invention of claim 2, since the light emitted from the light source at the end of the luminaire is attenuated and diffused by the cover, the light color of the light source at the end is less noticeable and gives the user a sense of discomfort. There is nothing.

  According to the invention of claim 3, since the light emitted from the light source at the end of the luminaire is whitened by the complementary color colored on the cover, the light color of the light source at the end is further inconspicuous.

  Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3A and 3B. As shown in FIGS. 1 and 2, the lighting fixture 1 of the present embodiment includes a mounting plate 2 to the wall surface of the lighting fixture 1, a main body case 3 fixed to the mounting plate 2, and a main body case 3. The horizontally elongated substrate 4 to be stored, the blue, red, and green light emitting diodes 5b, 5r, and 5g (light source) mounted repeatedly in a row on the substrate 4, and the light that covers the upper surface of each light emitting diode A permeable lid 6. Each of the light emitting diodes 5b, 5r, and 5g is lit to a predetermined brightness by a power supply circuit (not shown) and a lighting circuit (not shown) attached to the back surface of the substrate 4.

  The main body case 3 has a standing wall portion 3 a that houses the substrate 4. The lid body 6 is made of a transparent resin molded product, and has a shape similar to the standing wall portion 3a of the main body case 3 so as to be inserted into and fitted into the main body case 3 from above. Specifically, the standing wall portion 3 a of the main body case 3 has a narrow portion 3 b that accommodates the protruding portion 4 a of the substrate 4 at both ends thereof, and the narrow portion 6 a is also provided at both ends of the lid body 6. is doing. Accordingly, both ends of the row of the light emitting diodes 5b, 5r, and 5g arranged in a row extend to the narrow portion 3b of the main body case 3.

  And in the lighting fixture 1 of this embodiment, the emitted light from each light emitting diode 5b, 5g is attenuate | damped to the narrow part 6a of the cover body 6 so that the upper part of the light emitting diode 5b, 5g of both ends may be covered. A cover 7 is detachably mounted.

  The structure of the cover 7 will be described with reference to FIGS. 3 (a) and 3 (b). FIG. 3A is a perspective view of the cover 7 as viewed obliquely from behind, and FIG. 3B is a perspective view of the cover 7 as viewed from obliquely forward. The cover 7 is made of a resin molded product that is not transparent, has a substantially cubic shape having an inner width that is substantially the same width w as the narrow portion 6a of the lid 6 (FIG. 1), and lacks the front and bottom surfaces. It is a cap shape, and as shown in FIG. 1, it can be inserted and fitted into the narrow portion 6a from above. A hook portion 7a is formed at the lower part of the front surface of the cover 7, and when the cover 7 is inserted into the narrow portion 6a, the hook portion 7a is fitted into a recess 6b formed on the side surface of the narrow portion 6a. And it comes to be prevented from coming off.

  The cover 7 is a resin-molded base material mixed with a light diffusing material such as silica or talc. The cover 7 attenuates and diffuses the light transmitted through each surface 7b of the cover 7 and emitted from the inside to the outside. . The rear surface 7c of the cover 7 is printed with black color or a sticker is attached to attenuate the emitted light to substantially zero. Note that the cover 7 may be made of a milky white base material instead of mixing a diffusing material into the resin-molded base material, or the cover 7 may be subjected to a texture on the front surface or the back surface. .

  Next, FIG. 2 shows an aspect in which the lights Lb, Lr, and Lg emitted from the respective light emitting diodes 5b, 5r, and 5g are mixed when the cover 7 is attached to the narrow portions 6a at both ends of the lid body 6. The description will be given with reference. The light emitting diodes 5b, 5r, and 5g are repeatedly arranged in the order of blue, red, and green as described above, and the blue light emitted from the light emitting diodes 5b, 5r, 5g,. , Red and green light Lb, Lr, and Lg are transmitted through the portion of the lid 6 that is not covered by the cover 7 and diffused into the space and mixed evenly. Therefore, it appears as white light to the user at a position away from the luminaire 1.

  On the other hand, the light Lbh and Lgt emitted from the light emitting diodes 5b and 5g at both ends are covered with the cover 7 diagonally upward, so that the light entering the cover 7 (mainly from the light emitting diodes 5b and 5g outside). The light emitted in the direction) is diffused and the light energy is attenuated. Therefore, the inherent light colors (blue and green) of the light emitting diodes 5b and 5g at both ends do not stand out, and the user does not feel uncomfortable. Of the light Lbh and Lgt emitted from the light emitting diodes 5b and 5g at both ends, the light traveling toward the center of the lighting fixture 1 without entering the cover 7 is transmitted from the other light emitting diodes 5r, 5g, and 5b. It becomes white when mixed with light.

  Further, in the present embodiment, the rear surface 7c of each cover 7 is printed in black, or a black seal is stuck and processed so as not to transmit light, so that the light is emitted from the light emitting diodes 5b and 5g at both ends. Of the lights Lbh and Lgt, the light Lbs and Lgs that are most difficult to mix with the light from the light emitting diode closer to the center and are emitted outward at an angle close to horizontal are not leaked to the outside of the lighting fixture 1. As a result, the light colors (blue and green) of the light-emitting diodes 5b and 5g at both ends do not stand out from the user.

  Further, in the present embodiment, as shown in FIG. 2, the light emitted from the light emitting diodes 5b and 5g at both ends so that the tip of the cover 7 is positioned immediately above the light emitting diodes 5b and 5g at both ends. Although approximately half of Lbh and Lgt is covered by the cover 7, light emitted from the light emitting diodes 5b and 5g at both ends is obtained by extending the tip of the upper surface of the cover 7 toward the center of the lighting fixture 1. You may comprise so that most Lbh and Lgt may be covered with the cover 7. FIG.

  Next, a modification of the cover 7 will be described with reference to FIG. The cover 7 in the above embodiment is a resin molded product and is detachably fitted to the narrow portion 6a of the lid 6 by elastic deformation. However, the cover 7 according to the modification is shown in FIG. 4, the sheet-like cover 70 is detachably attached to the narrow portion 6a of the lid body 6.

  Specifically, the sheet-like cover 70 has a substantially T-shape so that the adhesive is attached to the back surface and covers the four outer peripheral surfaces of the narrow portion 6a when being attached to the narrow portion 6a of the lid body 6. It is formed in a shape. And the black printing B is given to the part 70a stuck to the end surface of the narrow part 6a when it is stuck to the narrow part 6a of the cover body 6 so that it may not transmit light, and the lid body In the portion 70b attached to the upper surface and the side surface of the narrow portion 6a when attached to the narrow portion 6a, the light transmittance decreases toward the outside of the narrow portion 6a. Black print B, which becomes gradually darker, is applied. In addition, the printing for making it light-impermeable is not limited to black, and may be white or other coloring. A dot pattern, a roughening process, etc. are also effective.

  Therefore, also in the lighting fixture 1 in which the sheet-like cover 70 is attached to the narrow portion 6a of the lid 6, the light-emitting diodes 5b at both ends, as in the lighting fixture 1 to which the cap-like cover 7 is attached. Light Lbh and Lgt emitted from 5g and entering the sheet-like cover 70 is attenuated in light energy, and the light colors (blue and green) specific to the light emitting diodes 5b and 5g at both ends do not stand out, making the user feel uncomfortable. Never give. In addition, the sheet-like cover 70 may be matt-finished as a whole, and the shape of the sheet-like cover 70 is not limited to the T shape but may be other shapes.

  In addition, the color of the cap-like cover 7 or the sheet-like cover 70 that is colored to attenuate light is not limited to black, and may be a complementary color of the light colors of the light-emitting diodes 5b and 5g. For example, the covers 7 and 70 covering the upper part of the blue light emitting diode 5b may be colored orange, and the covers 7 and 70 covering the upper part of the green light emitting diode 5g may be colored reddish purple. In this case, the lights Lbh and Lgt emitted from the light emitting diodes 5b and 5g at both ends are attenuated by the covers 7 and 70, and are whitened by the complementary color action, so that the inherent color becomes inconspicuous.

  In addition, the lighting fixture 1 is not always used alone, but as shown in FIG. 5, a plurality of lighting fixtures 1a, 1b,. It may be used by connecting. In this case, blue, red, and green light emitting diodes 5b, 5r, and 5g arranged in a line through the plurality of connected lighting fixtures 1a, 1b,. By being configured to be repeated, only the light emitting diodes 5bh and 5gt at both ends throughout can be made to have a unique light color, so that only the right and left ends of the lighting fixtures 1a and 1n at both ends throughout the cover 7 are covered. Alternatively, it is only necessary to attach the sheet cover 70.

  Specifically, in FIG. 5, only the leftmost light emitting diode 5bh of the leftmost lighting fixture 1a and the rightmost light emitting diode 5gt of the rightmost lighting fixture 1n are covered with a cover 7 or a sheet-like cover. The cover 7 or the sheet-like cover 70 is unnecessary for the light emitting diodes at the positions where the lighting fixtures 70 are attached (for example, the locations where the lighting fixtures 1a and 1b are in contact).

  As described above, when a plurality of lighting fixtures 1a, 1b,... 1m, 1n are connected to form a long lighting fixture assembly, the covers 7, 70 are only applied to the lighting fixtures 1a, 1n at both ends. However, even in such a case, the covers 7 and 70 of the present embodiment can be attached later by fitting or pasting after the connecting operation of the lighting fixtures is completed. Can be simplified.

The disassembled perspective view of the lighting fixture which concerns on one Embodiment of this invention. The longitudinal section front view of the lighting fixture. (A) is the perspective view which looked at the cover in the lighting fixture from diagonally back, (b) is the perspective view which looked at the cover in the lighting fixture from diagonally forward. The perspective view which shows the modification of the cover in the lighting fixture. The figure which shows the form in the case of using the same lighting fixture connected in multiple numbers. The longitudinal section front view of the conventional lighting fixture.

Explanation of symbols

1, 1a, 1b, 1m, 1n Lighting fixture 5b, 5r, 5g Light emitting diode (light source)
7 Cover 70 Sheet-like cover (cover)
Lb, Lr, Lg light

Claims (3)

In a lighting fixture in which a plurality of light sources having different light colors are repeatedly arranged in a row,
A cover for covering the light source located at the end of the row,
The lighting device according to claim 1, wherein the cover attenuates light emitted from the light source at the end.   The lighting device according to claim 1, wherein the cover is subjected to a light diffusion process.   The lighting apparatus according to claim 1, wherein the cover is colored in a complementary color of a light source that it covers.

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