JPH082707Y2 - Lighting panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a lighting panel used for lighting or the like.

[Conventional technology]

Lighting panels are placed as displays in stores or showcases to give a brighter image as one of the interior decorations in order to improve the image of the product by showing the usage status of the product. It is used by being installed as an interior on the wall surface of a room. In this lighting panel, various lighting panels with a built-in light source have been conventionally provided.

For example, as shown in FIG. 4, the present applicant arranges the fluorescent lamp 2 and the reflector 3 inside the lighting panel body 1 and uses the direct light from the fluorescent lamp 2 and the reflected light from the reflector 3. Provided is a thin illumination panel 6 configured by arranging a uniform shielding sheet 4 for making the illuminance distribution, that is, the unevenness of light uniform, and further disposing a diffusion plate 5 for diffusing transmitted light transmitted through the uniform shielding sheet 4. ing. In this lighting panel 6, a transmitted light type film 8 is interposed between the diffusion plate 5 and a protective sheet 7 arranged on the front surface thereof, and the transmitted light type film 8 is illuminated by the light of the fluorescent lamp 2. It is supposed to be.

[Problems to be solved by the device]

In such a thin lighting panel 6, due to the distance between the fluorescent lamp 2 and the reflecting plate 3 and the uniform shielding sheet 4, the shape of the reflecting plate 3, the structure of the uniform shielding sheet 4, etc. The illuminance distribution is different.
Therefore, in order to obtain the illumination panel 6 having a uniform illuminance distribution, it is necessary to make the structure and the arrangement position of the uniform shielding sheet 4 constant. Therefore, the size of the lighting panel 6 is standardized, and several types of standardized lighting panels 6 are provided, while non-standard lighting panels are individually designed and manufactured.

However, the customer either chooses from several standardized lighting panels or custom-produces expensive non-standard lighting panels, which are suitable for the installation location and purpose of use of the lighting panel. Could not be obtained immediately. Moreover, standardized products require a large number of types of inventories, which increases the cost.

[Means for solving the problem]

Therefore, the present inventor has conducted earnest research so that various types of lighting panels can be supplied immediately in response to demand, and as a result, has come to the idea of unitizing the lighting device of the lighting panel, and has arrived at the present invention. .

The gist of an illumination panel according to the present invention is a tubular light emitting source, a reflector disposed at a constant interval from the tubular light emitting source, and reflecting light from the tubular light emitting source, the tubular light emitting source and the reflector. One of a dot or a line which is disposed at a constant interval to face with and which corresponds to the illuminance distribution of the direct light from the tubular light source and the reflected light from the reflector, and which shields a part of the light. Alternatively, a uniform shielding sheet that appropriately disposes both of them on a transparent sheet to make the illuminance distribution of transmitted light substantially uniform, a holding unit that keeps the separation distance between the tubular light source and the reflector, and the uniform shielding sheet constant. Two or more lighting units configured to be provided are continuously arranged, and further, substantially the entire surface of the uniform shielding sheet of the arranged two or more lighting units is covered,
A diffuser plate for diffusing transmitted light that has passed through the uniform shielding sheet is provided, and the transmitted light type film provided on the front surface of the diffuser plate can be illuminated.

Another aspect of the lighting panel according to the present invention is a tubular light emitting source, a reflector disposed at a fixed interval from the tubular light emitting source, for reflecting light from the tubular light emitting source, and the tubular light emitting source. The light source and the reflector are arranged at regular intervals so as to correspond to the illuminance distribution of the direct light from the tubular light emitting source and the reflected light from the reflector, and the half is composed of light and shade that absorbs a part of the light. An opaque film is appropriately arranged on the transparent sheet to provide a uniform shielding sheet for making the illuminance distribution of transmitted light substantially uniform, the tubular light emitting source and the reflection plate, and a holding means for keeping a constant separation distance from the uniform shielding sheet. Two or more illumination units configured to be provided are continuously arranged, and further cover almost the entire surface of the uniform shielding sheet of the arranged two or more illumination units, and diffuse the transmitted light transmitted through the uniform shielding sheet. A diffuser plate for Certain transmission light type film disposed on a surface that is configured to be illuminated.

Another aspect of the lighting panel according to the present invention is a tubular light source, a reflector disposed at a constant interval from the tubular light source, for reflecting light from the tubular light source, and the tubular light source. It is arranged at a constant interval facing the source and the reflector,
Corresponding to the illuminance distribution of the direct light from the tubular light source and the reflected light from the reflecting plate, while appropriately disposing either or both of the dots or the lines that shield a part of the light on the transparent sheet, A uniform shielding sheet that appropriately arranges a semi-opaque film composed of light and shade that absorbs a part of light on a transparent sheet to make the illuminance distribution of transmitted light substantially uniform, the tubular light source and the reflector, and a uniform shielding sheet Two or more lighting units each of which is provided with a holding means for keeping a constant separation distance from and are arranged continuously, and further covers substantially the entire surface of the uniform shielding sheet of the arranged two or more lighting units. A diffusion plate for diffusing transmitted light that has passed through the uniform shielding sheet is provided, and the transmitted light type film provided on the front surface of the diffusion plate can be illuminated.

[Action]

According to the lighting unit constituting the lighting panel of the present invention, since the tubular light emitting source and the reflecting plate and the uniform shielding sheet are kept at a constant interval by the holding means, the direct light from the tubular light emitting source and the reflecting plate are provided. By transmitting the reflected light from the uniform shielding sheet, the transmitted light with a substantially uniform illumination distribution can be stably obtained. Therefore, by connecting one or more lighting units,
An illumination source having a substantially uniform illuminance distribution can be obtained. Moreover,
The uniform shielding sheet is based on the direct light from the tubular light source and the illuminance distribution by the reflected light corresponding to the shape of the reflector, and the density or shade of dots or lines depending on the distance between the tubular light source and the reflector. Is changed so that the transmitted light has a uniform illuminance, and thus the device is thin.

Therefore, according to the lighting panel of the present invention, since the lighting device portion for obtaining uniform lighting is unitized, the design change corresponding to the size of the lighting panel and the product inventory are hardly required, and the lighting unit is not required. The main part of the lighting panel can be configured simply by connecting them as necessary.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1A and 1B, reference numeral 10 is a lighting unit, and the lighting unit 10 is composed of a fluorescent lamp 12 which is a tubular light source, a reflecting plate 14, a uniform shielding sheet 16 and a holding means 18. There is.

The reflector 14 is for reflecting the light emitted by the fluorescent lamp 12 in one direction. The size of the reflection plate 14 is set within a range in which the light emitted from the fluorescent lamp 12 is attenuated and does not become lower than the required illuminance.

The uniform shielding sheet 16 includes a transparent sheet 20 made of a transparent or translucent resin film, a resin sheet, a resin plate, a glass plate, or the like, and a large number of dots 22 made of an opaque shielding film for shielding a part of light. It is a thing. The illuminance distribution by the direct light from the fluorescent lamp 12 and the reflected light reflected by the reflecting plate 14 shows the highest illuminance immediately above the fluorescent lamp 12, and the lowest illuminance at the end of the reflecting plate 14. Become. Therefore, with reference to the illuminance at the edge of the reflection plate 14 showing the lowest illuminance, so that the illuminance of the transmitted light transmitted through the uniform shielding sheet 16 at other locations becomes substantially uniform, the density and size of the dots 22. Is changed and formed. The arrangement of the dots 22 is set by computer analysis based on the illuminance distribution, and is set by taking the actual measurement value into consideration as necessary.

Dot 22 is a transparent sheet with black dots that absorb light
It may be formed by printing on 20. However, it is preferably formed by white or silver which reflects light and contributes to increase in illuminance again. As an example, aluminum is vapor-deposited on the transparent sheet 20 through a mask, or aluminum foil is attached and then etched by photoetching or the like.

The uniform shielding sheet 16 is held by the holding means 18, and is kept at a constant distance from the fluorescent lamp 12 and the reflector 14. The holding means 18 is composed of a holding member 24 which extends from the reflection plate 14 and which is integrally formed, and a hook 26 and a spring 28 which connect the holding member 24 and the uniform shielding sheet 16. The spring 28 facilitates attachment of the uniform shielding sheet 16 to the holding member 24 and prevents the uniform shielding sheet 16 from slackening due to temperature change and the like. The side surface of the holding member 24 is provided with a socket mounting member 32 for mounting the socket 30 which is the electrode of the fluorescent lamp 12, and the fluorescent lamp 12 is provided with both holding members 24, 24.
The intensity of the lighting unit 10 is increased as a whole by being disposed so as to span the space.

In the lighting unit 10 having such a configuration, when the fluorescent lamp 12 is caused to emit light by a ballast (not shown) or the like, the light is emitted from the fluorescent lamp 12 either directly or by being reflected by the reflecting plate 14 in one direction. . The irradiated light will have a distribution that shows the highest illuminance in the immediate vicinity of the fluorescent lamp 12, but the dots 22 that block the light formed on the uniform shielding sheet 16 have a high density with the immediate vicinity of the fluorescent lamp 12 as the center. The transmitted light that has been disposed and has passed through the uniform shielding sheet 16 exhibits a substantially uniform illuminance distribution. Therefore,
The lighting unit 10 can function as a surface light source showing a uniform illuminance distribution.

Next, the lighting panel 34 according to the present invention is shown in FIGS.
As shown in the figure, it is configured by connecting a plurality of the above-mentioned lighting units 10. That is, the lighting panel 34 is the lighting panel body.
A plurality of lighting units 10 are arranged side by side in the 36 and connected to each other, and at least a diffusion plate 38 is arranged so as to cover the uniform shielding sheet 16 of the connected plurality of lighting units 10. In the lighting panel 34 according to the present embodiment, the protective cover 40 is provided on the front surface of the diffusion plate 38, and the transmitted light type film 42 is sandwiched between the protective cover 40 and the diffusion plate 38. Has been done.

Here, the diffusion plate 38 is formed of a translucent resin plate of milky white or the like or frosted glass, and diffuses the stimulating transmitted light that has passed through the uniform shielding sheet 16 to alleviate the stimulus and generate a subtle light. It is for diffusing and absorbing unevenness.

The protective cover 40 is made of a transparent acrylic resin or glass and protects the transmitted light type film 42 and at the same time holds the transmitted light type film 42 and fixes it to the lighting panel 34. The protective cover 40 is not always necessary, for example, the protective cover 40 and the transmitted light type film.
It is also possible to integrally form 42 and 42. The transmissive film 42 is preferably made of a reversal film by a photographic technique, but other film such as a film drawn with a transmissive ink may be used.

According to the illumination panel 34 of the present embodiment, the light emitted from the plurality of illumination units 10 and having a substantially uniform illuminance distribution is diffused by the diffusion plate 38 to be more even light. The transmitted light that has passed through the diffusion plate 38 illuminates the transmitted light type film 42 disposed on the front surface thereof, and the transmitted light type film 42
The image printed or drawn on 42 will be revealed.

In the lighting panel 34 according to the present invention, a uniform lighting device is unitized by a lighting unit 10, and by connecting a plurality of lighting units 10, a lighting panel 34 of an arbitrary size is formed.
Can be configured. Since the external shape of the lighting unit 10 is standardized in accordance with the size of the tubular light source, the lighting panel depends on the number of lighting units 10 connected to each other.
The external shape of 34 will be decided. Therefore, the lighting panel main body 36, the diffusion plate 38, and the like that form the lighting panel 34 may be prepared in various sizes, and since their structures are simple, they may be manufactured immediately according to an order. . Further, the lighting panel main body 36 may be made into parts, and the parts may be assembled and manufactured.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments.

For example, in addition to forming the shielding film for shielding the light of the uniform shielding sheet 16 by the circular dots 22, the dots may be rectangular, triangular, elliptical, or the like, and the array of the dots 22 is limited to a lattice shape, a staggered shape, or the like. Not a thing. In addition to the dots 22, the shielding film may be formed by a line, or both the dot and the line. Further, for example, a so-called half mirror or a semi-opaque film capable of adjusting the amount of transmitted light by color shading is used instead of or together with the shielding film, and the illuminance distribution of the transmitted light transmitted through the uniform shielding sheet. Can be configured to be uniform. Further, a semi-transparent film may be appropriately laminated to form a shade so that the light transmission amount can be adjusted.

Further, the holding means for fixing the uniform shielding sheet 16 may be fixed by a screw or the like instead of the hook or the spring.

The shape of the reflection plate 14 is not limited to that shown in the drawings, and the reflection surface may be a curved surface, for example. However,
In this case, it is necessary to change the configuration such as the shielding film of the uniform shielding sheet.

Further, in the lighting unit, it is possible to pre-assemble a device such as a ballast for emitting light from the tubular light-emitting source as a unit, which makes it possible to more quickly assemble the lighting panel and the like. is there.

Although the present invention is primarily intended to unitize the uniform lighting device portion of the lighting panel, the unitized lighting unit does not stop at the lighting panel, and a product that requires a uniform lighting source, For example, it can be used for a trace base used for drawing, etc., and its use is not limited at all.

In addition, the lighting panel may be configured by one lighting unit, and when connecting a plurality of lighting units, it is possible to provide a hole or a projection for positioning engagement on the side surface of the reflection plate. The present invention can be embodied in various modified, improved, and modified forms based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

[Effect of device]

According to the lighting panel of the present invention, since the uniform lighting unit is unitized, it is possible to immediately manufacture a lighting panel of an arbitrary size by connecting a plurality of lighting units as appropriate. Therefore, it is not necessary to keep the finished products of the lighting panels of various sizes as an inventory, it is sufficient to have the lighting unit and other parts, and it is possible to reduce the costs associated with manufacturing and inventory of the lighting panels. .

Moreover, by unitizing the uniform illumination device unit, the obtained illumination unit can be used for products other than the illumination panel, and the manufacturing cost can be further reduced. It is effective.

[Brief description of drawings]

1 (a) and 1 (b) are views showing an illumination unit constituting an illumination panel according to the present invention. FIG. 1 (a) is a plan view,
The same figure (b) is a front view. 2 and 3 are views showing an illumination pamonet according to the present invention, FIG. 2 is a fragmentary perspective view of a main portion, and FIG. 3 is a front explanatory view. FIG. 4 is a fragmentary perspective view showing a conventional lighting panel. 10; Lighting unit 12; Fluorescent lamp (tubular light source) 14; Reflector 16; Uniform shielding sheet 18; Holding means 20; Transparent sheet 22; Dots (shielding film) 34; Lighting panel 36; Lighting panel body 38; Diffusing plate 40; Protective cover 42; Transmissive film

Claims (3)

[Scope of utility model registration request] 1. A tubular light-emitting source, a reflector disposed at a constant interval from the tubular light-emitting source, for reflecting the light from the tubular light-source, and a regular interval facing the tubular light-source and the reflector. One or both of a dot or a line that shields a part of the light, or both, are appropriately arranged on the transparent sheet according to the illuminance distribution of the direct light from the tubular light source and the reflected light from the reflector. A lighting unit configured to include a uniform shielding sheet that substantially uniformizes the illuminance distribution of transmitted light, a tubular light source and a reflection plate, and a holding unit that keeps a constant separation distance from the uniform shielding sheet. Two or more are continuously arranged, and further, a diffusion plate is provided which covers almost the entire surface of the uniform shielding sheet of the two or more illumination units arranged and which diffuses the transmitted light transmitted through the uniform shielding sheet. A transmitted light type filter disposed on the front surface of the diffusion plate. An illumination panel characterized by being configured to illuminate a film. 2. A tubular light-emitting source, a reflector disposed at a constant interval from the tubular light-emitting source and configured to reflect light from the tubular light-source, and a regular interval facing the tubular light-source and the reflector. Corresponding to the illuminance distribution of the direct light from the tubular light source and the reflected light from the reflector, a semi-opaque film composed of light and shade that absorbs a part of the light is appropriately arranged on the transparent sheet and transmitted. Two or more lighting units are continuously provided, which include a uniform shielding sheet that makes the illuminance distribution of the light substantially uniform, the tubular light-emitting source and the reflection plate, and a holding unit that keeps the separation distance from the uniform shielding sheet constant. And a diffusion plate that covers substantially the entire surface of the uniform shielding sheet of the two or more illumination units that are disposed, and that diffuses the transmitted light that has passed through the uniform shielding sheet. Illuminates the transmitted light type film arranged on the front surface. A lighting panel characterized by being configured to obtain. 3. A tubular light-emitting source, a reflecting plate arranged at a constant interval from the tubular light-emitting source, for reflecting the light of the tubular light-emitting source, and a constant interval facing the tubular light-emitting source and the reflecting plate. One or both of a dot or a line that shields a part of the light, or both, are appropriately arranged on the transparent sheet according to the illuminance distribution of the direct light from the tubular light source and the reflected light from the reflector. A uniform shielding sheet for providing a uniform illuminance distribution of transmitted light by appropriately disposing a semi-opaque film composed of light and shade that absorbs a part of light on the transparent sheet, and the tubular light source and the reflector. And two or more lighting units, each of which has a holding means for keeping a constant distance from the uniform shielding sheet, are arranged continuously. While covering the entire surface, the uniform shielding sheet is transparent. An illuminating panel, characterized in that a diffuser plate for diffusing passed transmitted light is provided, and the transmitted light type film provided on the front surface of the diffuser plate can be illuminated.