JP5472866B2 - Screen with light emitting function - Google Patents

Description

  The present invention relates to a partition having a light emitting function. Specifically, the present invention relates to a screen that emits light by a white LED light source provided therein.

  The partition is used, for example, for the purpose of placing the room upright and partitioning the room. For such a partition, conventionally, a metal panel or a wood panel that can stand up on a floor surface has been used.

  On the other hand, there is an invention described in Patent Document 1 that has been filed in the past by the present applicant for a lighting panel that emits light.

  Here, Patent Document 1 states that “a light-emitting diode (hereinafter referred to as an LED”) is provided on an end surface of a light guide plate in which a light-transmitting sheet is pasted on a surface on which minute unevenness is formed, whereby light from the LED is guided to the light guide plate. The illumination panel is characterized in that the light diffused in the surface direction due to the micro unevenness when passing through the interior of the light passes through the translucent sheet and emits surface light. When the light from the LED provided on the end surface passes through the inside of the light guide plate, it strikes the minute irregularities on the surface and diffuses and goes out through the translucent sheet. Since this phenomenon occurs uniformly on the entire surface, the entire surface of the light guide plate emits light, and since the light passes through the light transmitting sheet, the light passing through the light transmitting sheet is bent, Obtaining light that matches the properties of the translucent sheet Can become. Further, since there is no light emitter on the back side of the light guide plate, it is possible to save space becomes surface luminous body only the thickness of the width is the ". Also, “If the translucent sheet is Japanese paper, the entire surface will be soft due to the fiber pattern of the plant material and the diffusion of light between them, making it a good choice for Japanese-style interior lighting. It can be done.

JP 2008-021506 (Claim 1, Effect of the Invention, Paragraph 0025)

  When the lighting panel described in Patent Document 1 is used as a screen, it is preferable to use a white light source if an original color tone or texture of a translucent sheet such as Japanese paper is to be extracted. However, even in this case, the original color tone and texture of a translucent sheet such as Japanese paper may be impaired.

  That is, since a light emitting diode (LED) as a light source is provided on the end face of the light guide plate, when incident light from the end face of the light guide plate passes through the light guide plate and exits from the surface of the light transmitting sheet, the incident surface and the exit surface. Are not parallel to each other, so that the emitted light has a so-called prism effect (diffusion effect) caused by the light guide plate. As a result, the color balance of the emitted light is different from that of the incident light, and spectral light emission is likely to appear on the surface of the light transmissive sheet, so that the original color tone and texture of the light transmissive sheet are impaired during lighting. (See (a) of FIG. 4). This phenomenon is more remarkable when a white light emitting diode is used than when a fluorescent lamp or an incandescent lamp is used as a light source.

  In addition, when a translucent sheet is pasted on both surfaces of the light guide plate, when light is not emitted, the pattern of one translucent sheet can be seen through the translucent sheet on the opposite side due to external light, so-called The reflection phenomenon occurred, and the original color tone and texture of the translucent sheet were sometimes impaired. This phenomenon is more prominent when the pattern and the color are different between the translucent sheet on the back side and the translucent sheet on the front side.

  The present invention has been made in consideration of the above-mentioned matters, and has a light emitting function capable of creating a calm atmosphere by utilizing the original color tone and texture of the translucent sheet regardless of whether it is turned on or off. The purpose is to provide a screen with.

  In order to solve the above-mentioned problems, a partition having a light emitting function according to the present invention includes a standing frame body, a pair of transparent plates fitted in a frame body in a standing state spaced from each other, and the pair of transparent plates. It is comprised with a pair of translucent member allocated and provided in the surface which faces the outer side of each board | substrate, and the white LED light source attached to the frame so that it may illuminate toward the space between a pair of transparent board. Here, the transparent plate includes one having a haze by blasting or the like on the surface of the transparent plate.

The partition configured as described above includes a pair of transparent plates fitted in a frame body in a standing state, and a white LED light source is attached so as to illuminate a space between the pair of transparent plates. As a result, the light emitted from the white LED light source passes through the thickness direction of the transparent plate and reaches the translucent member (corresponding to the translucent sheet in Patent Document 1). The prism effect does not occur (see (b) of FIG. 4). Thereby, spectral light emission is less likely to appear on the surface of the translucent member, and the original color tone and texture of the translucent member are less likely to be impaired during lighting.
Further, by using a pair of transparent plates and fitting them into the frame body in a lined state with a predetermined distance from each other, the incident angle of the external light transmitted through the first transparent plate is further limited. As a whole, the amount of transmitted light of outside light is reduced. As a result, the so-called reflection phenomenon can be reduced, and the original color tone and texture of the translucent member are not easily damaged even when the light is turned off.
Furthermore, since the LED light source generates little heat when it is turned on, the phenomenon that the translucent member is peeled off due to thermal contraction or the like when the translucent member is attached to the transparent plate can be reduced, and the translucent member itself is heated It is possible to suppress discoloration due to.
In addition, the LED light source has advantages such as direct current drive and low drive voltage, and it is easy to control the light emission pattern such as the intensity of light emission.

  Moreover, it can be set as the structure which allocated and affixed a pair of linearly polarizing sheet to the surface of the side which each of a pair of transparent plate faces.

  The screen configured in this manner allows outside light polarized in various directions to pass through the linear polarizing sheet, thereby restricting the polarization direction of the transmitted light and reducing the amount of light, further reducing the so-called reflection phenomenon. Can be reduced.

  At this time, it is preferable that the pair of linearly polarizing sheets is configured to be allocated and attached to the facing surfaces of each of the pair of transparent plates so that the polarization directions thereof are substantially orthogonal to each other.

  The screen configured in this manner makes it difficult for external light to pass through both the pair of linearly polarizing sheets, so that the so-called reflection phenomenon hardly occurs.

  Moreover, a pair of translucent member can also be set as the structure whose one is Japanese paper and the other is a thin board of wood. The thin plate of wood preferably has a thickness of approximately 0.1 to 0.3 mm.

  The screen configured as described above makes full use of the characteristics of the present invention that the original color tone and texture of the translucent member are hardly impaired regardless of whether the screen is turned on or off. In the invention described in Patent Document 1, when both Japanese paper and wood thin plates that are different in design are allocated and pasted on both surfaces of the light guide plate, the member pasted on the opposite side due to the reflection phenomenon at the time of extinction It becomes easy to stand out.

  In addition, the white LED light source is built in the base at the bottom of the frame, and the pair of transparent plates is configured such that the lower end of each pair is shielded from light so that the light emission of the white LED light source does not enter from the lower end. It is also preferable that

  The screen configured in this way can block light that enters from the lower end of the transparent plate and can prevent a prism phenomenon in the unlikely event.

  The white LED light source is built in the base at the bottom of the frame and is configured to illuminate the space between the pair of transparent plates through a slit formed on the top surface of the base and opening upward. It is also preferable to adopt the configuration described above.

  The screen configured as described above can average the light emission intensity of the light emitting surface to some extent by the slit.

  According to the present invention, it is possible to provide a partition having a light emitting function capable of creating a calm atmosphere by utilizing the original color tone and texture of a light transmissive member (light transmissive sheet) regardless of whether it is turned on or off. .

It is a perspective view of the partition which has a light emission function. FIG. 2 is an enlarged vertical sectional view of a partition having a light emitting function of FIG. 1. It is the P section enlarged view of FIG. It is a figure for demonstrating a prism phenomenon.

  Hereinafter, the screen having the light emitting function of the present invention will be described with reference to FIGS. In FIG. 2, the pair of linearly polarized sheets that are allocated and attached to the facing surfaces of the pair of transparent plates are omitted. In FIG. 2 and FIG. 3, electronic components such as a white LED and a substrate existing inside the white LED light source are omitted.

  The partition having a light emitting function of the present embodiment includes a frame, a pair of transparent plates, a pair of translucent members, and a white LED light source, and further includes a pair of linearly polarizing sheets. . Hereinafter, each component will be described by way of example. The following embodiments are merely illustrative of the present invention, and the present invention is not limited to the following specific embodiments.

[Frame]
The frame 2 can stand upright vertically, and as shown in FIG. 1, a base 21 positioned at the lower portion of the frame 2, and left and right supports 22 extending upward from the left and right of the base 21, It is composed of a horizontal bar 23 provided so as to bridge the upper ends of the left and right support bars 22, and has a substantially rectangular opening. The size of the frame 2 was about 90 cm in height and about 130 cm in width.

  As shown in FIG. 2, a pair of transparent plates 31 and 32, which will be described later, are fitted in the frame 2 in a lined state with a predetermined interval. In addition, a white LED light source 60 described later is attached to the frame 2 so as to illuminate toward the space 30 between the pair of transparent plates 31 and 32. Specifically, the white LED light source 60 is built in the base 21 at the bottom of the frame 2 in a state of facing upward. A slit 20 that opens upward is formed on the upper surface of the base 21 (the inner peripheral side of the frame 2). In this embodiment, the width of the slit 20 is approximately 1 cm.

  The base 21 is a separate type that can be separated vertically, and has a structure that facilitates maintenance such as replacement of the white LED light source unit 6. On the other hand, a mirror 25 that reflects light emitted from the white LED light source 60 is affixed to the lower surface of the horizontal bar 23 facing the slit 20 formed in the base 21 as shown in FIG.

[Transparent plate]
The transparent plates 31 and 32 of the present embodiment are made by using a transparent acrylic resin plate material having a thickness of approximately 3 mm, which is cut to a size of approximately 75 cm in height and approximately 120 cm in width. The material of the transparent plate is not particularly limited as long as it has transparency, but it is preferable to use a transparent acrylic resin as in this embodiment. Two (a pair of) transparent plates 31 and 32 are required, and as described above, the transparent plates 31 and 32 are fitted into the frame body 2 in a line-up state in parallel with a predetermined distance from each other.

  Here, the incident angle of light that enters the transparent plate (refractive index of the acrylic layer is approximately 1.49) from the air layer (refractive index 1) and can be emitted to the air layer on the opposite side is a translucent member that will be described later. For the sake of convenience, it is limited to approximately 26.7 degrees or less according to Snell's law. As in the present invention, the pair of transparent plates 31 and 32 are arranged in a line at a predetermined interval across the air layer, so that the incident angle of light emitted from the first transparent plate is further increased by 26. It can be limited to 7 degrees or less, and the amount of light when external light passes through the pair of transparent plates can be reduced. As a result, the so-called reflection phenomenon can be reduced, and the original color tone and texture of the translucent member are hardly damaged even when the light is extinguished.

  Further, the two transparent plates 31 and 32 are fitted into the frame body 2 with their lower ends masked from light shielding so that the light emitted from the white LED light source 60 does not enter from the lower ends thereof. Specifically, in this embodiment, as shown in FIG. 3, the lower ends of the transparent plates 31 and 32 are masked by being fitted into the fitting grooves 211 provided at both ends of the upper surface of the base 21. A mask seal having no translucency may be attached to the entire lower end of the transparent plates 31 and 32.

[Translucent member]
As the translucent member of the present embodiment, translucent Japanese paper 41 and the same translucent cedar thin plate 42 (thickness is approximately 0.2 mm) are used. The size of the translucent member is approximately the same size (75 cm × 120 cm) as the transparent plates 31 and 32 so that the outer surfaces of the transparent plates 31 and 32 can be substantially covered.

  Then, Japanese paper 41 and a cedar thin plate 42 as translucent members were allocated and attached to the surfaces facing the outside of the pair of transparent plates 31 and 32 (the surfaces opposite to the surfaces facing each other). Here, for the purpose of improving adhesiveness or diffusing light, the surface of the pair of transparent plates 31 and 32 may be sandblasted.

  As the translucent member, in addition to the Japanese paper 41 and the cedar thin plate 42, a thin wood plate other than the cedar, a non-woven fabric, a woodgrain sheet, or a thin stone material can be used as long as it has translucency. Further, as the pair of translucent members, different materials such as Japanese paper and cedar thin plates are preferably used as in the present embodiment, but the same material may be used.

[Linear polarizing sheet]
Two linearly polarized sheets 51 and 52 (a pair) are cut out to approximately the same size (75 cm × 120 cm) as the transparent plates 31 and 32. Then, as shown in FIG. 3, the linearly polarizing sheets 51 and 52 are allocated and attached to the facing surfaces of the pair of transparent plates 31 and 32, respectively.

  In the present embodiment, the two linearly polarizing sheets 51 and 52 are allocated and attached to the pair of transparent plates 31 and 32 so that their polarization directions are substantially orthogonal to each other. Here, various commercially available products can be used for the linearly polarizing sheets 51 and 52. For example, a film made of polyvinyl alcohol or the like can be stretched while being heated, brought into contact with a solution of iodine or the like, and iodine molecules or the like are arranged in the stretching direction to add a polarizing function.

[White LED light source]
The white LED light source 60 illuminates the space 30 between the pair of transparent plates 31, 32, thereby transmitting light to the surfaces of the translucent members 41, 42 provided on the surfaces of the transparent plates 31, 32, The screen 1 is made to emit light. In this embodiment, a straight fluorescent tube-shaped white LED light source 60 in which a large number of white LEDs are arranged inside is used. The white LED light source 60 is attached to the white LED light source unit 6 and is built in the base 21 below the frame 2 as described above. Further, the white LED light source 60 emits light by supplying power from an external power source (not shown).

  Light emitted from the white LED light source 60 is illuminated toward the space 30 between the pair of transparent plates 31 and 32 through the slit 20. The illuminated light is transmitted through the linearly polarizing sheets 51, 52, the transparent plates 31, 32, and the translucent member (41, 42), and finally the surface of the translucent member (41, 42) is the surface. It emits light.

  The screen having the light emitting function having the above-described structure was able to bring out a calm atmosphere by utilizing the original color tone and texture of translucent members such as Japanese paper and cedar thin plates, regardless of whether they were turned on or off. .

  Although the present invention has been described above with reference to specific embodiments, the present invention is not limited to the above-described embodiments, and claims attached to the application of the present application by those skilled in the art or the like. Various changes and modifications can be made without departing from the scope.

  For example, in the above embodiment, the white LED light source is attached to the base at the lower part of the frame body. However, the present invention is not limited to this. Good. Moreover, you may attach a white LED light source to both a base and a reed.

1 screen

2 Frame
20 slits
21 base
211 mating groove
22 Support
23 Yokohama
25 mirror
28 Reinforcing plate

31,32 Transparent plate
30 space (between a pair of transparent plates)

41 Japanese paper (translucent material)
42 Cedar thin plate (translucent material)

51,52 Linear polarizing sheet

6 White LED light source unit
60 White LED light source

Claims (5)

A standing frame,
A pair of transparent plates fitted into the frame body in a standing state at a predetermined interval from each other;
A pair of translucent members provided allocated to the surfaces facing the outside of each of the pair of transparent plates;
A white LED light source attached to the frame so as to illuminate toward the space between the pair of transparent plates ,
The white LED light source is built in a base at the bottom of the frame, and illuminates toward a space between the pair of transparent plates through a slit formed on the top surface of the base and opening upward. Configured to,
A screen with a light emitting function.
A pair of linearly polarizing sheets were allocated and pasted on the facing side of each pair of transparent plates,
The partition having a light emitting function according to claim 1.
A pair of linearly polarizing sheets
All the polarization directions are almost perpendicular to each other, and are allocated and pasted to the facing surfaces of each pair of transparent plates.
The partition having a light emitting function according to claim 2.
One of the pair of translucent members is Japanese paper and the other is a thin plate of wood.
The partition which has a light emission function in any one of Claims 1-3.
White LED light source
Built in the base at the bottom of the frame,
A pair of transparent plates
To prevent the light emission of the white LED light source from entering from the lower end of each,
Each lower end is masked by shading,
The partition which has a light emission function in any one of Claims 1-4.