JPH02115064A - Water-jet device and optical transmission method with water-jet column utilized therefor - Google Patents

Abstract

PURPOSE:To enhance illumination effect of water-jet column by providing a light emitting part to the part near to the initial end part of the water-jet column. CONSTITUTION:A light emitting part 4 is provided to the part near to the initial end part 2a of water-jet column 2. The light emitted from the light emitting part 4 is made incident into the water-jet column 2 from the initial end part 2a thereof. While the incident light is repeatedly reflected on the surface of the water-jet column 2 or unreflated, this incident light is directly led to the terminal part 2b of the water-jet column 2 via the inside thereof. One part of this light is leaked to the circumference of the water-jet column 2 by the incident angle of an optical axis (a) for the surface of the water-jet column 2. This light is passed through the water-jet column 2 and reaches the terminal part 2b thereof and thereby optical transmission is performed by the water-jet column 2. Therefore the illumination effect of the water-jet column can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fountain device and a light transmission method using a fountain column.

[Conventional technology]

Conventionally, when illuminating a fountain pillar spouting into the air, an external lighting method that projects light from around the fountain pillar toward the fountain pillar, or an internal lighting method that projects light into the inside of the fountain pillar has been adopted.

[Problem to be solved by the invention]

However, with the external lighting method, not only the fountain pillar but also its surroundings are illuminated with light, so even if you try to make only the fountain pillar stand out with light, a sufficient effect cannot be obtained. When pillars are formed over a wide area, there is a problem in that light does not reach the entire fountain pillar and a sufficient lighting effect cannot be obtained. Furthermore, even if there is a request to color code multiple fountain pillars in close proximity with different colored lights, it is not possible to illuminate each fountain pillar individually with different colored lights, and it is difficult to clearly identify each fountain pillar. It was impossible to color code. On the other hand, with the internal lighting method, the light emitted from the light emitting part does not reach the entire fountain pillar, and the fountain pillar is only illuminated in the vicinity of the light emitting part, and the parts far from the light emitting part are not sufficiently illuminated. Or there was a drawback that there was no lighting at all.

The present invention has been made in view of the above circumstances, and by devising the state of the water flow forming the fountain column and the installation position of the light emitting part, it is possible to sufficiently illuminate the entire fountain column even though it is an internal lighting method. The purpose of the present invention is to provide a fountain device that can spread light throughout the area. Another object of the present invention is to provide a method of transmitting light using a fountain column.

[Means to solve the problem]

In the fountain device of the present invention, a light emitting part that emits light into the inside of the fountain column is provided near the starting end of the fountain column in a laminar or nearly laminar flow formed by spouting rectified water. It is something that

The light transmission method using a fountain column of the present invention involves injecting light into the starting end of a fountain column in a laminar or nearly laminar state formed by spouting rectified water, and directing the incident light into the interior of the fountain column. This leads to the end of the fountain column.

[For production]

A laminar or nearly laminar fountain column is formed by spouting rectified water, and the water flow that forms it has no or very little turbulence, creating a beautiful appearance that looks just like a glass rod. is known to draw. Therefore, when light is emitted from a light emitting part installed near the starting end of such a fountain pillar, the light incident on the fountain pillar passes through the inside of the fountain pillar, and in some cases, is repeatedly reflected on the surface of the fountain pillar and lights up the fountain. It reaches the end of the column.

The fountain pillar shines due to the light that leaks around it midway through the fountain pillar, and if that light is colored, the fountain pillar appears colored. Furthermore, the light that reaches the terminal end can be used as a means of transmitting information.

〔Example〕

FIG. 1 is a configuration diagram of a fountain device according to an embodiment of the present invention.
2 indicates a nozzle, and 2 indicates a fountain column ejected from nozzle 1. The nozzle 1 has a built-in rectifying section 3 and a light emitting section 4, and after the pressure water W fed to the nozzle 1 is rectified by passing through the rectifying section 3, it is ejected from the spout 5 and the water is splashed. If it fails, the fountain column 2 will be formed in a state in which there is no turbulence in the water flow or only to a negligible extent, that is, in a laminar flow or near laminar flow state. It has been confirmed through experiments that the fountain column 2 formed in this way has a beautiful appearance similar to that of a glass rod.

The rectifying section 3 can be constructed using, for example, a plurality of (about 3 to 5) wire meshes having a large number of fine meshes stacked at slight intervals, or other known rectifying mechanisms. . The light emitting section 4 is provided near the starting end 2a of the fountain column 2, and the light emitted from the light emitting section 4 is incident on the fountain column 2 from the starting end 2a. Then, as shown in FIG. 2, the incident light is repeatedly reflected on the surface of the fountain column 2, or directly passes through the inside of the fountain column 2 without any such reflection, and reaches the terminal end 2b of the fountain column 2. guided by. Such a phenomenon occurs not only when the fountain column 2 is formed linearly, but also when the fountain column 2 is curved in a parabolic shape as shown in FIG.

Depending on the angle of incidence of the optical axis a with respect to the surface of the fountain column 2, some of the light may leak around the fountain column 2.The light emitting section 4 itself is provided near the starting end 2a of the fountain column 2 as described above. However, the light source does not necessarily need to be provided near the starting end 2a of the fountain column 2. That is, even if the light source 4a itself is provided as a light emitting part 4 near the starting end 2a of the fountain column 2 as shown in FIG. 3, the light from the light source 4a provided at another location as shown in FIG. The light may be reflected by a reflecting mirror 4b provided in the vicinity of the starting end 2a of 2 and then incident. In the case of FIG. 4, the reflecting mirror 4b becomes the light emitting part 4. Also, as shown in Figure 5, the optical fiber 4cT
:i light may be projected at a location near the starting end 2a of the fountain column 2. In the case of Figure 5, optical fiber 4
The terminal end 4d of 0 becomes the light emitting part 4.

In the above, when the fountain column 2 is formed of highly transparent water, light enters the starting end 2a of the fountain column 2 from the light emitting part 4, and the light passes through the fountain column 2 to the terminal end of the fountain column 2. By reaching the portion 2b, light transmission by the fountain column 2 is performed. The amount of light transmitted depends on the thickness of the fountain pillar 2 and the light emitting part 2.
It changes depending on the amount of light emitted, etc. Further, when a part of the light passing through the inside of the fountain pillar 2 leaks to the surroundings of the fountain pillar 2, the fountain pillar 2 is illuminated by the leaked light, and the fountain pillar 2 itself visually appears to be floating from the surroundings. When colored light is incident, the entire fountain column 2 is colored in the color of the light. In addition, when the light emitted from the light emitting section 4 which emits light in a different color is incident on each of the plurality of fountain pillars 2 which are close to each other as shown in Fig. 6, each of the fountain pillars 2 is incident. The colors of the fountain pillars 2 no longer influence each other, and each fountain pillar 2 is clearly color-coded. These facts have been confirmed by experiments.

Note that the light emitting section 4 may emit light intermittently to repeatedly illuminate the entire fountain column 2 at time intervals, or the light emitting section 4 may emit light continuously to illuminate the entire fountain column 2. You are free to continuously illuminate the entire area. Also,
It is also possible to change the color of the emitted light or the intensity of the color by using a color filter placed in front of the light emitting section 4, if necessary.

〔Effect of the invention〕

According to the fountain device of the present invention, although the fountain pillar is illuminated by an internal lighting method, the light emitted from the light emitting part is distributed throughout the fountain pillar, and the entire fountain pillar is colored with the color of the light. Moreover, it can sufficiently meet the demand for clearly color-coding multiple fountain pillars in close proximity with different colors of light. Also, since it uses an internal lighting method, there are no problems like the external lighting method described at the beginning.

According to the optical transmission method using a fountain column of the present invention, it is possible to transmit limited light to a limited place via the fountain column as if it were transmitted using an optical fiber. Regardless, the fountain column as a transmission medium can be formed immediately if necessary, so there is no need to form it if optical transmission is not performed, and there is an advantage that the transmission medium does not remain in the space. . In addition, the length of the fountain column as a transmission medium and the destination location can be easily changed by controlling the direction and pressure of the rectified water jet, which has the advantage that the destination location of optical transmission can be easily changed. be. Regarding this point, when using optical fibers, it is necessary to permanently install the optical fiber as a transmission medium in preparation for optical transmission even when optical transmission is not performed, so the optical fiber does not get in the way when optical transmission is not performed. Furthermore, there is the inconvenience that the destination location of optical transmission cannot be easily changed.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a fountain device according to an embodiment of the present invention, and FIG.
The figure is an explanatory diagram illustrating the state of optical transmission, Figures 3 to 5 are cross-sectional views for explaining the locations where the light emitting parts are installed, and Figure 6 is a configuration diagram showing the main parts of the fountain device according to a modified example. . 2... Fountain column, 2a... Starting end, 4... Light emitting part. Patent applicant Kubota Iron Works Co., Ltd.

Claims (1)

[Scope of Claims] 1. A light emitting part that emits light into the inside of the fountain column is provided near the starting end of the fountain column in a laminar flow or nearly laminar flow formed by spouting rectified water. A water fountain device. 2. Light is incident on the starting end of a fountain column in a laminar or nearly laminar state formed by spouting rectified water, and the incident light is guided to the terminal end of the fountain column through the inside of the fountain column. A light transmission method using a distinctive fountain column.