JPH0339844Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial field of application The present invention relates to decoration and display devices using light, and particularly relates to devices that utilize the phenomenon of infinite reflection between opposing mirror surfaces. The present invention provides a light-emitting display device that can be used as an indoor ornament, a display window display, or the like.

b. Prior art and its problems Conventionally, as a light-emitting display device that utilizes infinite reflection by a pair of mirror surfaces, the Utility Model Application No. 58-2902
Publication No. 131899 and Japanese Unexamined Patent Publication No. 131899/1983 were known. In these devices, one of the mirrors is a half mirror, and an infinitely reflected image of the light image is observed through this half mirror. It was composed of lamps and neon tubes placed in the ceiling.

However, these conventional devices have the disadvantage that the pattern of the optical image cannot be easily changed and the display is slow in movement.

That is, in conventional systems, patterns are drawn by a large number of individually lit lamps, and changing the pattern requires complex support, movement, power supply, and control equipment, making it expensive. .

c. Purpose of the invention The object of the present invention is to provide a light-emitting display device that can emit light from a large number of light sources using simple and inexpensive means, can move these light sources freely, and can have a moving pattern.

d Structure of the invention The inventor investigated the causes of the shortcomings of conventional devices, and found that the reason why the pattern cannot be easily moved is that the light-emitting body is a lamp or the like that itself actively emits light. Because I tried to configure it with
It was discovered that when attempting to move lamps, etc., the power supply cord was dragged, which hindered movement.

Therefore, in order to eliminate the need for cords, the inventor of the present invention made the luminous body emit light passively, and in order to eliminate the need for a support device that would prevent infinite reflection, the inventor suspended it in a transparent liquid and moved it through natural convection. I came up with the idea to do it.

Based on this idea, the inventor first floated a piece of metal foil in water to utilize the reflection of light, irradiated it with a lamp, and placed it between the half mirrors, but unfortunately, In this case, since the light from the lamp was reflected between the half mirror and the mirror, the background became bright as a whole, and satisfactory infinite reflection did not occur.

Therefore, the next technical problem was how to limit the brightness of the background due to the light directly emitted from the lamp, but this was not an easy problem to solve.

However, after further consideration, the inventor found that
It has been found that this problem can be solved by making the light supplied from the lamp not visible light but invisible ultraviolet light, and converting the ultraviolet light into visible light at the light emitter. By employing a combination of an ultraviolet lamp and a small piece of fluorescent light, the present invention was achieved.

Hereinafter, the configuration of the present invention will be described by way of examples with reference to the drawings.

The box 10 is shaped like a water tank, and at least one side thereof is a half mirror 1, which serves as an observation surface 7 so that an infinite reflection image can be observed. At least the surface of the box 10 facing the half mirror is a reflective surface 2, and infinite reflection occurs between the half mirror 1 and the reflective surface 2. Although the reflective surface 2 is a mirror, it can also be a half mirror and used as an observation surface. There are no particular restrictions on the other surfaces, but if these are mirrors or half mirrors, reflection will spread to the sides as well, creating a kaleidoscope effect. Especially when all sides are half mirrors,
All sides become observation surfaces, allowing you to observe infinite reflected images from any side, as well as reflected images that spread out to the sides like a kaleidoscope.

A non-fluorescent transparent liquid 4 is placed inside the box 10. This liquid may be selected as appropriate depending on the need, but water is the easiest to use. Further, the specific gravity can be adjusted by dissolving appropriate salts in water so that the fluorescent particles 5 can be properly suspended. Normally, if you keep water in your aquarium, bacteria and algae will grow.
Cloudiness and stains on the wall surfaces occur, which is particularly noticeable when lighting is used, but the present invention has the advantage that such inconveniences do not occur because the interior of the box 10 is irradiated with ultraviolet rays.

Fluorescent particles 5 are suspended within the liquid 4. The fluorescent particles 5 are made of wood, plastic, metal, etc., or a combination thereof, and are made to have a specific gravity close to that of the liquid 4 as a whole. However, if the shape has a large viscous resistance such as a piece of foil, even if its specific gravity is not necessarily close to that of the liquid 4, it can be sufficiently suspended in the liquid with a small liquid flow.
The fluorescent particles 5 are mixed with or coated with a fluorescent substance,
It emits visible light when irradiated with ultraviolet light. As the phosphor, for example, one containing a known fluorescent substance such as zinc sulfide or cadmium sulfide can be used.If the material is translucent plastic, it can be mixed with an opaque material such as wood or metal. In this case, apply this as a water- or oil-resistant paint to the surface.

The shape of the fluorescent pieces 5 can be granular, string-like, foil-like, etc., but for example, they are formed into a fish shape coated with fluorescent paint that emits blue or red light, and placed inside a box imitating an aquarium. If a large number of cobalt sparrows and neon tetras are suspended in the air and a liquid flow that circulates in one direction is generated using an auxiliary liquid flow generating means such as a screw, it is possible to create a dynamic display in which cobalt sparrows and neon tetras migrate.

In addition, when applying fluorescent paint to the fluorescent small piece 5,
By partially changing the color or by not applying the coating to a portion so as not to emit light, an effect can be obtained in which the color changes or blinks as the fluorescent particles 5 move. Particularly when the fluorescent piece 5 is a piece of foil, it is effective to change the color on the front and back sides of the foil, or to apply the fluorescent paint to only one side and make the other side black.

The ultraviolet lamp 3 has the shape of a discharge tube, and there are two types: one with a transparent tube body and one with a dark purple ultraviolet transmission filter. The former generates some purple visible light, but its ability to illuminate the background is weak and is of no practical use. In principle, the ultraviolet lamp 3 may be placed anywhere facing the inside of the box, and if it has a water-resistant structure, it can be placed in the liquid 4, but it is best not to see it from the viewing surface 7. preferable. Therefore, in the simplest embodiment, the ultraviolet lamp 3 is attached to the top of the box 10 using a fluorescent lamp holder for tropical fish. In the illustrated embodiment, on the contrary, an ultraviolet lamp 3 is provided on the bottom surface. In this way, natural convection of the liquid 4 due to heat can be obtained. In this case, a transparent plate is used for the bottom, but the UV lamp can be completely hidden from view by using a dark purple UV-transmitting filter or a half mirror.

Although the box 10 is shown as a rectangular parallelepiped in the figure, it can be modified into a polygonal column shape or a thin panel shape.

In the box 10, auxiliary means for generating a liquid flow are provided as appropriate. These are screws, convection heaters, air pumps, etc. In particular, when employing the fish-shaped fluorescent pieces 5, an interesting effect can be obtained by generating a water flow using an air pump for a tropical fish tank or the like.

e Effects of the invention As described above, the present invention uses a simple configuration to realize pattern movement in a display device that uses infinite reflection, and provides dynamic window displays, tropical fish tank-style ornaments, and wall decorations. It has the excellent effect of being able to

[Brief explanation of drawings]

FIG. 1 is a perspective sectional view of an embodiment of the present invention. In the figure, 1: half mirror, 2: reflective surface,
3: Ultraviolet lamp, 4: Liquid, 5: Fluorescent piece, 7: Observation surface, 10: Box.

Claims (1)

[Scope of utility model registration request] A box 1 in which the observation surface 7 is a half mirror 1 and at least the surface facing the observation surface 7 is a reflective surface 2.
0 is filled with a non-fluorescent transparent liquid 4, fluorescent particles 5 are suspended in the liquid 4, and the box body 10 is further provided with an ultraviolet lamp 3 for irradiating ultraviolet light into the box body. Luminescent display device.