JPS5827101A - Controller for transmitted light - Google Patents

Abstract

PURPOSE:To change transmitted light continuously by forming a light transmittable membrane of a reversible elastic member such as silicone rubber having fine cracks on the surface or in the inside and providing a mechanism for changing the shapes of the cracks by changing the tension of said membrane. CONSTITUTION:Silicone rubber 1 is used as a light transmittable membrane, and fine cracks 1a are provided on the surface or the inside thereof. When the cracks 1a are pulled in the direction of an arrow F, the cracks 1a increase their sizes. When the tension is released, the cracks 1a close, whereby brightness can be controlled. The silicone rubber 1 having the cracks 1a is mounted to a frame 2, and the bottom end thereof is fixed to a pulling arm member 3. The member 3 is set to bearings 6, and said member is operated by an axially turning member 7, by which pulling force is controlled. If such device is used as a lighting blind for windows, the transmission quantity light is changed continuously and the device is convenient.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmitted light control device suitable for use in varying the amount and state of light transmission.

Conventionally, there are various types of devices that can change the amount and state of light transmission, such as blinds attached to windows in rooms and translucent glass installed in bathroom windows. The structure is complicated and assembly is troublesome, and the latter has disadvantages such as the inability to continuously vary the amount of light transmitted.

In view of these points, the present invention provides a versatile transmitted light control device that has a simple configuration, can arbitrarily change the amount of light transmitted and the transmitted state as necessary, and can be adapted to any usage situation. It is something to do.

Hereinafter, one embodiment of the present invention will be described in detail based on FIGS. 1 to 3.

Figure 81 shows the configuration of this embodiment. In Figure 1, (1) is a light transmitting film made of a reversible elastic member having a crank on the surface or inside, such as silicone rubber, and (2) is silicone rubber (1). A predetermined mounting member, such as a frame such as a window frame, on which the frame is stretched. A tension arm member (3) is provided on the lower side of this frame (2), the lower end of the K silicone rubber (1) is attached to this arm member (3), and the upper end of the silicone rubber (1) is attached to the upper end of the frame (2). Attached to the top. In other words, the silicone rubber (11) that transmits light is stretched over substantially the entire portion (2a) of the frame (2) through which the light passes.Of course, the silicone rubber (1) is stretched over the entirety of the frame (2). Whether the rack is mounted or partially suspended can be arbitrarily changed depending on the mode of use.

Further, the arm member (3) is fixed to a shaft (4), and both ends of the shaft (4) are rotatably supported by bearings (5) and (6). Further, at one end of the shaft (4), a long screw (8) is provided, one end of which comes into contact with the shaft rotation member (force is fixed). A handle (9) is attached to the other end.The screw (8) is slidably fitted by a NAND α, and this nut (1G itself is not shown, but is fixed to a base etc. Therefore, when the handle (9) is rotated, the screw (8) rotates the shaft (4) by pressing the force on the shaft rotation member (1) and the screw (8) due to the propulsive force generated by the screw (8). As a result, the arm member (3) fixed to the shaft (4) K is covered with silicone rubber (
1) downward to apply a predetermined tension to this silicone rubber (1).

Silicone rubber (1) essentially has a large number of fine particles (1a) (FIG. 2) on its surface or inside. Therefore,
As shown in Figure 2A, under normal usage conditions where no tension is applied, the incident light travels approximately straight as shown by the arrow in the same figure, but as shown in Figure 2B, tension F is applied. In this state, the shape of the crack (1a) becomes large and a kind of white turbidity occurs, and the incident light is refracted and scattered in various directions as shown by the arrows in the figure, reducing the amount of transmission. When the tension is removed, the crank state of the silicone rubber (1) returns to its previous state, and the amount of permeation increases again. The degree of change in the shape of this crack, that is, the degree to which white turbidity occurs, increases as the tension increases, making it possible to continuously increase the amount of light transmitted through the silicone rubber (1) to Km.

Next, to explain the operation of this embodiment, silicone rubber (1
), when no tension is applied to the silicone rubber (
Under the influence of the inherent light transmittance of 1), the light travels almost straight in the direction of the arrow as a transmitted light.

If the amount of light transmitted or the transmission state Y is to be changed, the knob (9) is rotated, for example, clockwise. Then, as the handle (9) rotates, the screw (8) advances in the direction of the shaft rotation member (force) and rotates it clockwise around the shaft (4). ), this member (the arm member (3), which is coupled via the fixed shaft (4)) also rotates in the clockwise direction, thereby causing the silicone member whose lower end is attached to this arm member (3) to rotate clockwise. Tension is applied to the rubber (1).As a result, the shape of the fine ranks (1a) existing on or inside the silicone rubber (11) becomes larger in accordance with the tension, and as shown in Figure 3, the shape of the fine ranks (1a) becomes larger. The incident light is refracted and scattered in various directions by the greatly enlarged crank in the silicone rubber (1), and as a result, the amount of transmission obtained in the direction indicated by the arrow in FIG. 3 is reduced.

Then turn the handle (9) counterclockwise and screw (8)
) to its initial position, the silicone rubber (1)
The tension applied to the silicone rubber (
1) Since the state of the crack in the inside returns to its original state, the amount of light transmitted increases again.

By simply rotating the nozzle (9) by a predetermined amount in this manner, the transmission state or amount of light passing through the silicone rubber (1) can be easily varied accordingly.

As described above, according to the present invention, a tension that can be continuously changed is applied to the light transmitting film made of a reversible elastic member such as silicone rubber, and this tension is applied by changing the shape of the cracks generated in the light transmitting film. Light transmission iK At least a part of the incident light is refracted and scattered in different directions so that the transmission state or amount of light can be varied in conjunction with each other, so the configuration is simple and the transmitted light can be easily controlled. can.

In the above embodiments, the case where silicone rubber is used as the light-transmitting film is explained, but the invention is not limited to this, and it is possible to use a reversible elastic member, that is, an elastic member that returns to its original state when the applied tension is removed. If so, other materials may be used.

Furthermore, in the above-described embodiments, transparent plates such as glass or acrylic plates may be arranged before and after the light-transmitting film to prevent stains. Furthermore, the light-transmitting film and the glass placed before and after it may be painted with a certain color or a picture, etc., which can create a special decorative effect, and unlike conventional blinds, etc. There is also the effect that you can always see things like this.

Furthermore, the structure may be such that the information, picture design, etc., can be covered with a light-transmitting film. With such a structure, the information, design, or color can be hidden or shown depending on the presence or absence of tension. It is extremely useful for use in devices that instantly change the mood of a room.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2 is a line diagram for explaining the invention in detail, and Fig. 3 is a side view for explaining the operation of Fig. 1. be. (1) is silicone rubber, (2) is frame, (3) is tension arm member, (4) is shaft, (force is shaft rotation member, (8) is screw, (9) is noddle. Procedural amendment dated October 31, 1981 1. Indication of the case Patent Application No. 125073 of 1988 2. Title of the invention Transmitted light control device 3. Person making the amendment Relationship to the case Patent applicant representative director Kazuo Iwama 4. Agent 1-8-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo (
Shinjuku Building) Tokyo ((13) 343-5821 (Representative) 6, Number of inventions increased by amendment 7, Subject of amendment Drawing 8, Contents of amendment (1) Figure #!2 in the drawing as shown in the attached sheet Correct ``H''.The above is the 21st λ1 4-

Claims (1)

[Claims] 1. A light transmitting film having a fine rank on the surface or inside thereof, and a tension rod changing mechanism for varying the tension applied to the light transmitting film, the light transmitting film being controlled by the tension applied to the light transmitting film. A transmitted light control device characterized by controlling scattering of transmitted light in a transmitting film. 2. The transmitted light control device according to claim 1, wherein the light transmitting film is a reversible elastic member. 3. The transmitted light control device according to claim 2, wherein silicone rubber is used as the elastic member.