KR20120000961U - Lighting instruments - Google Patents

Abstract

It provides a high-luminance lighting fixture in which the bright spot of the LED is not visible.
A substrate 4 having an elongated outer case 2 having an opening 7, and a plurality of LEDs 3 accommodated in the outer case 2 and arranged in a row at the opening side of the outer case 2; And a transparent cover 5 covering the entire side of the surface on which the LED 3 of the outer case 2 is mounted, and an optical film 6 having high optical anisotropy on the outer or inner surface of the transparent cover 5. )
Alternatively, the entire outer case may be covered with a cylindrical transparent cover. The light distribution direction of the optical film 6 covering the transparent cover is usually made parallel to the alignment direction of the plurality of LEDs 3.

Description

Lighting fixtures {LIGHTING INSTRUMENTS}

The present invention relates to a lighting fixture, and more particularly to a lighting fixture of high illumination in which the bright point of the light emitting diode is not visible.

Light emitting diodes (hereinafter referred to as " LEDs ") have long life, good energy efficiency (low power consumption), and strong resistance to shocks, and thus have recently been used as lighting means.

 If the LED is used as a light for illuminating the merchandise display case of a store, it is not only energy efficient, but also generates less heat than fluorescent lamps, and there is little fear of deteriorating the displayed merchandise by heat. In addition, if the lighting serves as an interior product in a store or the like, an LED having a long life and suppressing power consumption is optimal because the lamp is turned on for a long time.

In view of such a point, for example, the "electric decorative module" described in Japanese Utility Model Registration No. 315387 is a plurality of LEDs mounted on the opening face side of an outer case of a rectangular rectangular elongated cross section having a U-shape in cross section, It is used to decorate the interior of a restaurant, entertainment facility, or a home party.

However, there is a problem that must be solved when the LED is to be used as an illumination like a light bulb or a fluorescent lamp without leaving the LED in a decoration such as a room.

For example, although LED fluorescent lamps (including line shaped lights) are commercialized, these LED fluorescent lamps have the following disadvantages.

First, the LED fluorescent lamp is generally covered with a milky white cover to make the exterior closer to a conventional fluorescent lamp, but when the milky white cover is attached, there is a problem that the illuminance is lowered.

Second, the illuminance of the LED light source is originally weak and only close to the illuminance of the fluorescent lamp in the exposed state, there is a problem that the bright spot of the LED is visible in the eyes and the discomfort occurs.

Third, the LED has a problem that the light emitting color temperature of the product is irregular, and if used as it is, the product becomes a color stained product.

Fourth, when color screening is performed, a product which cannot be used is generated, and there is a problem that productivity is worsened and the unit price is affected.

Fifth, the color rendering index of the general diffusion products of the LED is about Ra 70, the high color rendering type is about Ra 85 ~ 90, in the case of high color rendering, there is a problem that the illuminance falls in inverse proportion.

[Patent Document 1]

Japanese Utility Model Registration No. 3145445

The present invention is to solve the problems as described above, 1) can secure the almost exposed LED illuminance, specifically can increase the illuminance of about 20% with respect to the milky white cover, 2) to illuminate the eyes The light source can be avoided, and 3) it is inconspicuous because of the mixing of light even when there is a mixture of color temperature. 4) By using the LED which can compensate for the decrease in illuminance of the high color rendering type by the improvement of the illuminance of the product. It is an object to provide a lighting fixture.

In order to achieve the above object, the invention described in claim 1 is a lighting device using the LED, the outer case having an opening, the outer case is accommodated in the outer case, and further arranged in a plurality in a row on the opening side of the outer case A substrate having a light emitting diode mounted thereon, and a transparent cover covering the entire side of the surface on which the light emitting diode of the outer case is mounted, the outer or inner surface of the transparent cover is covered with an optical film having high optical anisotropy. It is done.

In order to achieve the above object, the invention described in claim 2 is a lighting device using an LED, the outer case having an opening, the outer case is accommodated in the outer case, and a plurality of in a row arranged in the opening side of the outer case A substrate having a light emitting diode mounted thereon, and a cylindrical transparent cover covering the entirety of the outer case, the outer or inner surface of the transparent cover is covered with an optical film having high optical anisotropy.

In order to achieve the above object, the invention as set forth in claim 3 is a lighting device using LED, comprising a substrate mounted with a plurality of light emitting diodes arranged in a row, and a cylindrical transparent cover for accommodating the entirety of the substrate; And cover the outer or inner side of the transparent cover with an optical film having high optical anisotropy.

In order to achieve the above object, the invention described in claim 4 is the lighting device according to any one of claims 1 to 3, wherein the light distribution direction of the optical film covering the transparent cover is parallel to the alignment direction of the plurality of light emitting diodes. Or at right angles.

In the present specification, the "light distribution direction" refers to the strongest direction on the premise of the effect of being strongly distributed in a specific direction as a result of light scattering.

According to the present invention, since a special film is attached to a transparent cover for accommodating the LEDs arranged in a line, the light emitted by each LED is easily scattered in the same direction, thereby exerting an effect as if it is a line light source. Therefore, an LED having a long life and low power consumption can be used as illumination of a line light source such as a fluorescent lamp.

In addition, since the calorific value is lower than that of a normal fluorescent lamp or a light bulb, it is most suitable as, for example, lighting illuminating a case of fish food or the like, lighting in a refrigerator or the like.

1 is a perspective view of a lighting apparatus according to a first embodiment of the present invention.
It is a figure which shows the optical characteristic of the optical film which concerns on 1st Embodiment of this invention.
It is a figure which shows the state which energized the LED of the lighting fixture which concerns on 1st Embodiment of this invention.
4 is a perspective view of a lighting apparatus according to a second embodiment of the present invention.
It is a figure which shows the state which energized the LED of the lighting fixture which concerns on 4th Embodiment of this invention.

[First Embodiment]

With reference to FIG. 1, 1st Embodiment of the lighting fixture of this invention is demonstrated.

The lighting apparatus 1 which concerns on embodiment of this invention is transparent which covers the outer case 2, the board | substrate 4 which mounted the LED 3, and the side which mounted the LED 3 of the outer case 2. It consists of the cover 5 and the optical film 6 which covers the inside of the transparent cover 5.

In addition, illustration and description of a power cord, a power adapter, etc. are abbreviate | omitted.

The outer case 2 is a case having a long rectangular parallelepiped shape like a curtain rail having an opening 7, and is provided on both sides of the substrate mounting surface 8 on which the substrate 4 is placed, and the mounting surface 8 in the longitudinal direction. Consisting of two sides 9.

The outer case 2 uses an insulating material for the inner portion on which the substrate 4 is mounted, but any other portion may be used. However, it is preferable to be lightweight.

The board | substrate 4 mounts several LED 3, and mounts the lighting circuit of LED3. The plurality of LEDs 3 are arranged in a line along the longitudinal direction on the opening 7 side of the outer case 2 on the substrate 4. The LEDs 3 are preferably arranged at equal intervals.

The board | substrate 4 is equipped with elements, such as IC, a resistor, and capacitance which are not shown in figure, but illustration and description are abbreviate | omitted. In addition, all or part of electrical wiring may be printed wiring.

The transparent cover 5 is a cover made of transparent plastic or glass covering the entire opening 7 side of the outer case 2. If the light transmittance is high, it may be colorless or colored.

In order to mount the transparent cover 5 to the outer case 2, for example, a guide groove (not shown) is provided in the outer longitudinal direction of the two side surfaces 9, and the longitudinal direction of the transparent cover 5 is provided. It is good to insert both ends of the slide in the groove.

The inner side of the transparent cover 5 is covered with the optical film 6. The use of this optical film 6 is essential for the purpose of the present invention, so that when a plurality of LEDs are turned on, the plurality of bright spots are not visible and the scattered light is strongly distributed only in one direction to obtain high illuminance. At the time of filing of this application, the use of a product name CF200, CF400 etc. is assumed as an optical film, for example. Here, the physical and optical characteristics of CF200 will be briefly described. It is a synthetic resin molded in a thin film shape having a thickness of 200 μm, the refractive index is 1.51, the total light transmittance is 90%, the haze (diffusion transmittance / total light transmittance) is 95%, the diffusivity is 10 × 30 °, and the heat shrinkage rate (80 ° C x 240hr) is 0.5% and the color difference is 2.5. Optical characteristics have optical anisotropy as shown in FIG. 2 represents the light distribution direction.

Due to the characteristic of increasing the illuminance in the light distribution direction, a decrease in illuminance can be reduced even when a high color rendering LED is used.

Next, use of the lighting fixture 1 is demonstrated with reference to the schematic diagram of FIG.

As shown in the above figure of FIG. 3, the lighting fixture 1 is illustrated as having three LED 3 arranged. The lower view of FIG. 3 shows that the light distribution direction of the optical film 6 is parallel to the alignment of the LEDs 3, and when the light of the individual LEDs 3 passes through the optical film 6, the light scatters and the bright spots It shows the state light-distributed in the horizontal direction so that it may not be seen. In FIG. 3, light scattered from one LED 3 is indicated by an ellipse denoted by 10. As described above, when the lighting device 1 is energized, the point light sources are arranged in a row and exhibit the same effect as the linear light sources. In addition, even if there is a mixture of color concentrations between the adjacent LEDs 3, mixing of light occurs, so that there is an inconspicuous effect.

Second Embodiment

In the lighting device 1 of the first embodiment, the transparent cover 5 covers only the LED mounting side of the outer case 2.

However, the lighting fixture 31 of 2nd Embodiment is characterized by the point that the outer case 2 whole is covered with the cylindrical transparent cover 32, as shown in FIG. Other than that is not different from the first embodiment.

The cross section of the transparent cover 32 is considered various, such as circular, elliptical, semicircular, or other shapes.

Since this embodiment exhibits the same feeling as a fluorescent tube when the LED 3 is turned on, it is suitable for use in women's clothing stores and the like that place an emphasis on the atmosphere as lighting that also serves as interior goods.

[Third Embodiment]

In the lighting fixture 31 of 2nd Embodiment, the outer case 2 which mounted the board | substrate 4 of LED3 in the cylindrical transparent cover 32 is accommodated. However, the substrate 4 may be stored in the transparent cover 32 as it is. This is because the inside of the cylindrical transparent cover 32 is almost in a sealed state, so that the lighting circuit and the wirings of the board 4 do not have to be protected by the outer case. Moreover, since the haze value of the optical film 6 is high, the circuit and wiring of the board | substrate 4 are not seen from the outside. If the outer case is not used, manufacturing effort and cost can be reduced accordingly.

Fourth Embodiment

In 1st Embodiment, the light-aligning direction of the LED 3 and the light distribution direction of the optical film 6 were parallel.

However, as shown in FIG. 5, when the direction of the optical film 6 is made vertical, the light of LED3 will distribute light perpendicularly to the alignment direction, and will show a different feeling and attract a human eye. This shows the possibility of being used as a novel interior.

The above embodiment is merely an example, and various modifications may be considered.

For example, although the inside surface of a transparent cover is covered with an optical film, you may cover the outside surface of a transparent cover.

The columns of the plurality of LEDs are not limited to one line but may be a plurality of rows.

In summary, it is important to use a light fixture composed of a plurality of LEDs as a high illuminant light source in which the surface of the transparent cover is covered with a thin film having optical anisotropy and no bright spots are visible.

The luminaire according to the present invention has a long lifespan, low power consumption, and is suitable for night lighting, which needs to be turned on overnight, and has a low heat generation, and is installed in a display case (especially a cold case) of a store. It is also suitable for lighting in refrigerators and freezers.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1: lighting fixture
2: outer case
3: LED
4: substrate
5: transparent cover
6: optical film
7: opening
8: Board Mounting Surface
9: side
10: Representation of light scattering from one LED
31: lighting fixtures
32: transparent cover

Claims (4)

An outer case having an opening,
A substrate accommodated in the outer case and mounted with a plurality of light emitting diodes arranged in a row at an opening side of the outer case;
A transparent cover covering the entire side of the surface on which the light emitting diode of the outer case is mounted;
A lighting device characterized by covering the outer or inner surface of the transparent cover with an optical film having high optical anisotropy. An outer case having an opening,
A substrate accommodated in the outer case and mounted with a plurality of light emitting diodes arranged in a row at an opening side of the outer case;
A cylindrical transparent cover covering the entirety of the outer case;
A lighting device characterized by covering the outer or inner surface of the transparent cover with an optical film having high optical anisotropy. A substrate on which a plurality of light emitting diodes are mounted in a line;
It is provided with the cylindrical transparent cover which accommodates the said whole board | substrate,
A lighting device characterized by covering the outer or inner side of the transparent cover with an optical film having high optical anisotropy. The method according to any one of claims 1 to 3,
The light distribution direction of the optical film which covers the said transparent cover is a lighting fixture characterized by being parallel or perpendicular to the direction of arrangement of the said plurality of light emitting diodes.

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