JPH0624240Y2 - Organic glass decorations - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Use of the Invention) The present invention relates to an organic glass ornament which is particularly useful as an ornament for edge lighting.

(Background) Edge lighting, in which a light ray is incident from the end face of a transparent plate material to illuminate letters, figures, symbols, etc. engraved on the plate surface, has already been seen in the 1920's. Number plate, signboard, etc.).
However, this idea has come to be realized because of the development of poly-methylmethacrylate and other transparent casting resins as a light-weight casting material instead of glass, and the fluorescent lamp (hot cathode fluorescent discharge lamp) as a linear light source. )
This is after seeing the development of peripheral technologies such as the development of.

(Prior art and its problems) By the way, the edge lighting currently performed is roughly classified into letters, figures, symbols, etc. by using fluorescent ink on the surface of a flat transparent plate, and from the end face of the plate. Either a method of irradiating a fluorescent lamp or engraving characters, figures, symbols, etc. on the plate surface itself, and letting light rays enter from the end surface as well.

The former allows you to express characters and figures in any color you like, but as you can expect in principle, only a few rays reach the ink, so the characters and figures that appear are dark,
Therefore, its main use is only for displaying temporary memos, billboard-like signs, or daily menus at coffee shops.

On the other hand, the latter gives a bright brilliance because most of the incident light rays can be used, and in that sense it looks ideal, but engraving by post-processing is troublesome. As well,
It is unavoidable that dust etc. will gradually accumulate on the engraved part and the glitter will deteriorate.

Moreover, the light emitted from the engraved surface (the reflected light is a diffused reflected light because the engraved surface cannot be a mirror surface) is visible only from the flat side direction.

(Progress of completion of the device) In the process of research for improving the above defects of the organic glass decorative body, the present inventor first tensioned a heat-shrinkable yarn in a mold in a tensioned or relaxed state. The casting resin molded product with linear or non-linear through holes formed by removing the embedded yarn from the cured resin after filling the mold with the casting material in the state is beautiful by edge lighting. Emits radiance,
Therefore, it has been found that this molded body has a value as a novel decorative body that has never existed before by appropriately arranging the through holes. However, in this case, considerable skill is required to pull out the yarn, and the yarn may be cut during the process of pulling out, or the inner surface of the through hole may be melted by the frictional heat at the time of pulling out and the fine particles in powder form may be generated. May be attached, and such troubles are especially true in the non-linear through hole.

(Object of the Invention) The object of the present invention is to solve the above-mentioned problems and to provide a new organic glass ornament which has good glitter and is easy to manufacture.

(Means for achieving the purpose) In order to achieve the above purpose, the decorative body according to the present invention is
An organic glass molded article having a smooth through hole on the inner surface, wherein the thread is made of a non-optical fiber having a shape similar to the inner wall of the through hole, substantially apart from the inner wall of the hole. It is characterized by the existence of articles. The various elements that make up the invention will be explained below.

[Material] << Organic glass >> As the organic glass, in addition to the methacrylic resin, a bulk polymerizable transparent resin such as a urea resin or a polyester resin can be used, but for the purpose of designing, a methacrylic resin, especially poly-methyl methacrylate is used. Most preferable in terms of colorlessness, transparency and weather resistance. The urea resin and the polyester resin are advantageous in terms of price, but are not suitable for decorative purposes because of their transparency to visible light.

<< Molding Method >> The above-mentioned organic glass is formed into various shapes according to the purpose as described later. As this molding means, a cast molding means of a viscous mixture (commonly referred to as "syrup") consisting of a polymer and a monomer or obtained by prepolymerization of a monomer is used. Means such as casting with a molten resin and compression molding of resin powder can also be used.

<< Yarn >> The yarn may be either a monofilament or a twisted yarn. However, when both ends of the yarn are supported by the formwork and held horizontally, the catenary deflection is inevitably generated. Therefore, in order to straighten this, the fibers forming the yarn are formed by the molding operation. It is necessary to shrink during the temperature to solidify or to decrease to a falling temperature. Therefore, in order to form a linear through hole, the yarn itself must have heat shrinkability. Therefore, as the yarns, drawn yarns of polypropylene, high-density polyethylene, polyamide, polyester and the like are preferably used. However, when the through holes may be non-linear, the undrawn yarn of the above fibers is also sufficient. During the drawing operation, these yarns are made slightly smaller in diameter depending on the stretched state and separated from the inner wall of the through hole.

The thickness of the yarn varies depending on the inner diameter of the through hole to be provided, and therefore cannot be generally specified, but it is usually within the range of 0.1 to 2 mm, preferably 0.5 to 1.5 mm.

The outer shape of the yarn is usually circular, and this shape is the best for expecting the total reflection effect described later. However, it may have a spiral cross section (due to a twisted yarn of a soft twist) or a substantially rectangular cross section (due to a slit yarn), and the through holes formed by the yarns having these irregular cross sections partially see through the inside. It has a unique effect to forgive.

The yarn may be colored in a single color or in multiple colors as desired. In the case of edge lighting, when the light beam enters at a right angle to the traveling direction of the through hole having a circular cross section, the internal yarns are virtually invisible due to total reflection,
When the incident direction is inclined with respect to the traveling direction of the hole, the yarn inside becomes somewhat visible. The diffused light also allows the internal threads to be seen through. Therefore, when the inner yarn is colored, the inner yarn is seen through or not seen depending on the property of the light ray and the incidence thereof, and a complicated and delicate aesthetic appearance is produced. As a matter of course, if the yarn is in close contact with the inner wall of the through hole, it is completely visible.

[Shape and Structure] The decorative body according to the present invention may have any shape, such as a rectangular plate, a disk, a cylinder, a prism, a cube, a rectangular parallelepiped, a cone, a pyramid, a spheroid, or the like, depending on the purpose. Can be taken. However, it is generally preferred that it be provided with a versatile rectangular plate form.

The through holes (pores) penetrate the ornamental body in a free direction and form a decorative linear or non-linear two-dimensional or three-dimensional pattern. This pattern is determined by the changes in the inner diameter of the pores, the density of the pores, the running direction of the pores, etc.,
There is nothing more to say here, as this should be determined solely by design considerations. However, the inner diameter of this hole is naturally determined by the diameter of the yarn used.

The inner wall of the through hole should be as smooth as possible. Normally, the surface of the monofilament is almost smooth, so that the inner wall surface of the formed pores is also smooth.

The thread inside the through hole need only be separated from the inner wall of the pore by a microscopic gap. If laid out, total internal reflection occurs only by the presence of a fine air layer between the inner wall of the hole and the surface of the yarn. This is a gap that occurs when the yarn is pulled slightly. When pulling the yarn from both sides during this peeling, it is possible to peel off only the both end sides depending on the type of yarn and leave the central portion without peeling. in this way,
If some threads remain without peeling from the inner wall,
Because it does not glow with incident light, it can be used alone or in combination with color to create a more varied design.

[Light Source] Although a normal fluorescent lamp (hot cathode fluorescent discharge lamp) is used as a light source, a thin one is more advantageous than a plate-shaped ornament. Especially, the cold cathode fluorescent discharge lamp has an outer diameter of 5 to 6 mmφ.
However, since it does not generate much heat and can be embedded inside the plate-like body, this brings about a simple effect of the lighting device, an increase in lighting efficiency and other beneficial effects. If desired, a light source such as a light emitting diode or an optical fiber or an optical transmission means may be embedded. Further, when it is desired to make the threads in the pores stand out, the EL light emitting plate can also be used as a background light source. A parabolic reflector is attached to the back of the light source, and a condenser is preferably attached to the front,
It is desirable to make the incident light beam as parallel as possible.

[Backing] In the decorative body of the present invention, an opaque back plate is not essential behind the main body, and the back plate is an obstacle in a display intended to be viewed from both sides. However, it is usually preferable to provide a backing such as a half mirror and a black vinyl plate. These back plates have the effect of reflecting non-parallel rays that are contaminated in the light source rays to the surface side of the main body, making the threads inside the through holes visible, and raising the figures etc. drawn on the main body. Play.

[Combined Use of Other Decorative Means] The present decorative body does not necessarily exclude the combined use of other decorative means. For example, beautiful butterfly wings such as morpho butterflies, birdwing butterflies, beautiful beetles, dried flowers, braids, chiyogami, coins, medals, precious stones, corals, engravings of figures, sculptures or drawings of figures, etc. Any existing or future developed decorative means such as coloring of a resin material, mixing of a fluorescent dye into the material, and attachment of a half mirror to the back surface can be added.

(Operation) Referring to FIGS. 1 and 2 for explaining the principle of the invention, first, in FIG. 1 in which the shape of the through hole is circular, the black reflector 4 is placed on the back surface of the decorative body 1. When a light ray (light flux) R is incident from the end face 1 _c , a yarn (diameter 0.5 m in the experiment
mφ white polyamide monofilament, plate thickness 8mm) 3
The through-hole 2 _A (FIG. _{A in the} figure: the inner diameter of the through-hole and the outer diameter of the thread are greatly enlarged for the sake of description) does not shine at all, and the thread 3 inside is visually recognized. Contrary to this, the internal in no yarn, ie the yarn 3 through hole has had withdrawn 2 _B (Dozuro) and yarn 3 is present, the outer wall 3 _a of Article thread The through hole 2 _c (see FIG. 3C) separated from the inner wall 2 _{a of the} hole similarly emits luminescence, and no light loss is observed. As a result of the measurement, the brightness of the holes 2 _B and 2 _C was the same as long as the conditions were the same.

Considering the above causes, the light flux R emitted from the light source L travels inside the plate 1 through various paths, but the light flux R ₁ impinging on the through hole 2 _A has a refractive index (about 1.49) of the plate 1. And the refractive index of the polyamide fiber in the hole (about 1.53) is small, so total internal reflection does not occur at the interface between the two media, and therefore the eye E
When viewed from the position of, the state is whether or not the presence of the yarn 3 can be slightly recognized (Fig. A). On the contrary, the through hole 2 _B (FIG. _B ) in which the yarn 3 does not exist inside and the through hole 2 _B which is free from the inner wall 2 _{a of the} hole even if the yarn 3 exists inside _{In C} (Fig. _C ), due to the large difference in refractive index between the resin and air, the luminous flux R ₂ and the incident angle larger than the critical angle i _c
R ₃ cannot penetrate into the inside of the holes, respectively, and are reflected by the inner wall surface 2 _a of the holes, most of which are on the surface of the ornament 1.
Since it is emitted to the 1 _a side, when viewed from the position of the eye E, each inner wall 2 _a of the hole shines brightly, and the existence of the thread 3 in the through hole 2 _C is hardly recognized.

Next, in FIG. 2 in which the through-hole 2 is of a rectangular shape, in this case, since the shape of the hole 2 is rectangular, the luminous flux incident perpendicularly to the inner wall 2 _{a of} the hole is, of course, more than the critical angle i _c . The obliquely incident light beam R passes through the insides of the yarn 3 and the plate 1 while being refracted, and is radiated to the surface side of 1. Therefore, in this case, the thread 3 inside is visually recognized while the through hole 2 is shining weakly. Therefore, in this type, the effect of both the light emission of the through hole and the see-through of the yarn is exhibited. Therefore, when the colored yarn is selected as the yarn, the color of the yarn is not affected by the brilliance of the through hole. Mix and mix to create an exquisite aesthetic. In this case, if the colored yarn is dyed with a fluorescent dye or the inner wall of the through hole 2 is colored with a fluorescent dye and an ultraviolet lamp is used as an illumination light source, a more subtle decorative effect is brought about. Lastly, the action and effect when the inner diameter of the through hole 2 is a deformed shape such as a spiral shape or an elliptical shape is roughly intermediate between the above two types.

(Embodiments) Hereinafter, various embodiments of the invention will be illustrated with reference to embodiments, but each embodiment is of course for explanation and has nothing to do with the inclusion / extension of the idea of the invention.

Embodiment 1 FIG. 3 is a cutaway front view of one embodiment of the invention, and FIG. 4 is a sectional view taken along the line XX in FIG.

10 is a square plate made of polymethylmethacrylate.
And a plurality of corrugated through holes 2, 2 ... Simulating a wave protruding from the inside of the plate-like body, and yarns 3, 3 ,. ., And a yacht pattern 5 printed on the back surface of the plate-shaped body 1 using fluorescent ink,
A half mirror 4 laminated on the back surface of the plate-like body 1;
A cold cathode fluorescent lamp 6 attached to the lower end surface 1 _c of the reflector 7 for the discharge lamp, consisting of casing and pedestal 9 for incorporating the discharge lamp power supply 8.

When the power is turned on, a plurality of wavy through holes 2 and 2 simulating a wave
・ ・ Brightly shines, and the sail of a white yacht stands out on it, giving it a fantastic appearance.

Embodiment 2 FIG. 5 is a cutaway front view of another embodiment of the invention, and FIG.
FIG. 6 is a sectional view taken along the line YY of FIG.

As in the case of the previous example, the whole 20 comprises a rectangular plate-shaped body 1 made of polymethylmethacrylate, and a plurality of curved through-holes 2, 2 ... ·When,
The threads 3 and 3 colored with a blue fluorescent dye that are inserted in the inside of the through hole in a free state, the black vinyl plate 4 ′ laminated on the back surface of the plate 1, and the 1 a cold cathode fluorescent lamp 6 attached to the lower end face 1 _c, a reflector 7 for discharge lamp, including a casing and a pedestal 9 having a built-in said discharge lamp power supply 8, unlike the previous , Plate 1
Through the thickness direction, the tip of which is like a fireworks surface 1 _a
A large number of optical fibers 21, 21 ... Which are exposed to the side and whose rear end is converged and reach the inside of the casing 9, and a high-intensity red LED 2 attached to the end of the optical fibers 2.
Including 2, 22 ...

When the discharge lamp 6 and the LED 22 are turned on, the plurality of wavy through-holes 2, 2 ... Simulating a river flow shines white and at the same time, the light of the LED 22 transmitted through the optical fiber 21 is a fireworks-like light spot on the end face of the former. 21a, 21a ··· and colors the board, giving it a aesthetic appeal as a display. In particular, if the light spots corresponding to each fireworks are sequentially blinked via the timer, or if the light spots corresponding to each fireworks are turned on sequentially from the central one to the peripheral ones, the actual fireworks It becomes a decorative body with the same sense of presence as. The LEDs may be used in combination with other colors if necessary.

(Effects of the Invention) As described above, the present invention can contribute to the enrichment of consumers and the development of related work by providing a novel ornament using the total reflection and transmission of light.

[Brief description of drawings]

1 and 2 are partially enlarged sectional views for explaining the principle of the invention, and FIG. 3 is a cutaway front view of an embodiment of the invention, FIG.
The figure is a cross-sectional view taken along the line XX of FIG. 3, and FIG.
FIG. 6 is a cutaway front view of another embodiment of the invention, and FIG. 6 is a sectional view taken along the line YY of FIG. The meanings of the symbols in the figures are as follows :-( Common to each figure) 1: Plate (main body);-Front surface of 1a: 1, back surface of 1b: 1, end surface of 1c: 1-within 2: 1 Through hole: ・ 2a: 2 inner wall; ・ 3: 2 inner thread: ・ ・ ・ 3a: 3 outer wall: 4: Half mirror, 4 ': Black vinyl plate, 10, 20: Decorative body Each whole; ・ 5: 1 back side figure, 6:10, 20 cold cathode fluorescent discharge lamp,
Power supply device for 7: 6 reflector 16; 9: casing and pedestal (common to 10, 20 below; 20 only below); 21: optical fiber; 22: LED light source; 21a: light spot; (Fig. 1 And FIG. 2 only) L: light source, R, R _{1 to} R ₃ : luminous flux, i _c : critical angle.

 ─────────────────────────────────────────────────── ───Continued from the front page (56) Bibliographic references Sho 59-68779 (JP, U) US Patent 4519017 (US, A) US Patent 4510555 (US, A)

Claims (6)

[Scope of utility model registration request] 1. An organic glass decorative body for edge lighting, comprising an organic glass molded body having a smooth through hole on the inner surface thereof, and existing inside the through hole, and having a diameter smaller than the above through hole diameter by pulling. An organic glass decorative body, characterized in that it comprises a woven yarn, and the yarn is separated from the inner wall of the through hole by a slight gap. 2. The organic glass decorative body according to claim 1, wherein the through hole is linear. 3. The organic glass decorative body according to claim 1, wherein the through hole is curved. 4. The organic glass decorative body according to claim 1, wherein the molded body is a plate-shaped body. 5. The organic glass ornament according to claim 1, wherein the yarn is colored. 6. The organic glass decorative body according to claim 1 or 4, wherein the molded body is produced by a casting method.