JPH059001B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for effectively diffusing light transmitted through a light radiator, more specifically, a light guide rod, a light guide pipe, etc., out of the light guide rod or light guide pipe. In particular, the light radiator comprises at least two light guide rods or light guide pipes connected in series, and a notch is provided in the outer circumferential wall of the light guide rod or light guide pipe at the connection part. The light propagating within the light guide rod or the outer circumferential wall of the light guide pipe is diffused and emitted to the outside through the notch.

Conventional Technology Recently, we have entered an era of energy conservation, and research and development is being actively conducted in various fields on the effective use of solar energy.However, in order to use solar energy most effectively, It is to use light energy as it is without converting it into other forms of energy such as energy or electrical energy. From this point of view, the present applicant focused sunlight using a lens or the like, introduced it into a light guide cable, transmitted it to any desired location through the light guide cable, and set up the light guide at that location. Various proposals have already been made regarding emitting light through cables to provide evidence.
Therefore, when trying to use solar energy for lighting as described above, the light propagating inside the optical conductor cable has directionality, so it is necessary to cut the end of the optical conductor cable. When light is emitted from the cut point, the radiation angle is usually 46 degrees for focused light, which is quite narrow, and it is difficult to use sunlight to illuminate the room uniformly. In such cases, it is not possible to provide satisfactory illumination by simply cutting the end of the semiconductor cable and emitting light from the cut point. Therefore, the applicant:
Various proposals have been made regarding optical radiators that can effectively diffuse the light propagated within the optical conductor cable and uniformly illuminate a wide range. The present invention has been made as part of this, and basically consists of using at least two light guide rods or light guide pipes that are cascade-connected, and cutting the outer peripheral surface of the light guide rod or semiconductor pipe at the connecting part. A notch is provided so that the light propagating within the light guide rod or the outer circumferential wall of the semiconductor pipe is effectively diffused by the notch and radiated to the outside.

4 and 5 are side sectional views for explaining an example of an optical radiator separately proposed by the present applicant. In FIG. 4, a notch 1a is provided on the outer peripheral surface of the light guide rod 1, FIG. 5 shows a structure in which a part of the light L propagating through the light guide rod 1 is diffused at the notch 1a and emitted to the outside of the light guide rod. A notch 1a is provided in the outer circumferential wall so that a part of the light L propagating within the outer circumferential wall of the external light guide pipe 1 is diffused by the notch 1a and emitted to the outside.
In these examples, the outer end 1a' of the notch 1a is inclined so as to open outward, and the end surface 1a'' is aligned in the direction of light propagation (the longitudinal direction of the light guide 1) as shown in the figure. ) or so as to open inward as shown by the dotted line in the figure.In addition, a large number of these notches may be provided along the direction of light propagation. ,
In particular, in the example shown in FIG. 4, if the depth d of the notch is gradually increased along the direction of light propagation, the light can be emitted almost uniformly in the longitudinal direction of the light guide rod. I can do it.

However, as described above, when a plurality of cutouts are provided along the direction of propagation of light, it is very difficult to form the cutout portions.

Purpose The present invention has been made in view of the above-mentioned circumstances, and in particular, in an optical radiator having a plurality of notches in the direction of propagation of light, the notches can be easily formed, and This was done with the aim of providing an optical radiator with high manufacturing precision.

Configuration Figures 1 and 2 are exploded views for explaining embodiments of the present invention, and in the figures, 1 to 3 are light guide rods or light guide pipes, and Figure 1 shows the light guide rods. , FIG. 2 shows examples of light guide pipes, but in these embodiments each light guide 1-3
are connected in cascade in the direction of light propagation in the order shown, similar to the optical radiators shown in FIGS. 4 and 5,
The light emitted from each notch is effectively diffused and radiated at the inclined surface 1a' of the notch. Therefore, in the present invention, as shown in the light guide rods or light guide pipes 2 and 3, a notch is formed on the end face of each light guide; Since a plurality of light guides are connected in series, it is easier to form a notch compared to the optical radiator shown in FIGS. 4 and 5, and manufacturing accuracy can be improved.

FIG. 3 is a diagram showing a modified embodiment of the embodiment shown in FIG. 2, in which when each of the light guides 1 to 3 is cascaded in the embodiment shown in FIG. A light guide rod 4 is inserted into the light guide pipe, and each light guide pipe is connected via the light guide rod 4. In this way, a plurality of light guide pipes can be connected in cascade. ,and,
Light can be emitted from the connection.

Effects As is clear from the above explanation, according to the present invention, with a simple configuration, light propagated through the light guide rod, light guide pipe, etc. can be transferred to the light guide rod, the light guide pipe, etc.
It can be effectively diffused and emitted out of the light guide pipe.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining embodiments of an optical radiator according to the present invention, and FIGS. 4 and 5 are diagrams for explaining an example of an optical radiator separately proposed by the applicant. It is a diagram. 1 to 3...Light guide rod or light guide pipe, 1
a... Notch portion, 4... Light guide rod.

Claims (1)

[Scope of Claims] 1 Consists of at least two light guide rods connected in cascade, the light guide rod having a notch in at least one end face of the light guide rod at the cascade connection, and having a cutout in at least one end face of the light guide rod in the cascade connection, and a light guide rod having a notch in at least one end face of the light guide rod in the cascade connection. A light radiator characterized in that the light coming from the cutout portion is emitted to the outside. 2 Consisting of at least two light guide pipes connected in cascade, at least one of the light guide pipes has a notch in the end face of the outer peripheral wall thereof, and the light propagating through the outer peripheral wall of the light guide pipe is cut out. A light radiator characterized by emitting light to the outside from a notch.