KR20040081654A - Blind structure using polarizing film - Google Patents

Abstract

PURPOSE: A blind structure using polarizing film is provided to control the permeability of lights from the outside by polarization. CONSTITUTION: The blind structure using polarizing film comprises: a housing(10) forming the outer frame of a blind structure; double transparent base plates fixed to the housing(10); a polarizing plate placed between the transparent base plates and provided with a polarizing shaft to penetrate lights; a primary polarizing disk(30) and a secondary polarizing disk(40) provided with polarizing shafts and arranged to the front and rear of the polarizing plate to rotate at the appointed angle; and a driving unit(50) rotating the primary and secondary polarizing disks by gearing.

Description

Blind structure using polarizing film {BLIND STRUCTURE USING POLARIZING FILM}

The present invention relates to a blind structure using a polarizing film, and specifically, includes a polarizing plate having a polarization axis formed in one direction therein, and a plurality of circular polarizing discs having a circular polarization axis formed in the same direction as the polarization axis of the polarizing plate, each polarized light. It relates to a blind structure using a polarizing film that can control the transmittance of light by forming a structure in which the disks are interlocked with each other, thereby causing an angle difference between the polarizing plate and the polarizing axis of the polarizing plate by rotating the lens at an angle.

Curtains and blinds are often used to block light from entering the room from the outside or to lower the amount of light. Such curtains and blinds are used when a large amount of light flows in a general home or office, and is also used to increase the clarity of a slide when performing a presentation.

Conventional curtains or blinds are made of an impermeable or semi-permeable cloth or plastic, and for operation, the user has to open and close them by hand. In the case of such curtains or blinds, the degree of light transmission depends on the characteristics or colors of the materials used. In particular, in the case of curtains, a plurality of curtains having different colors may be used to transmit or completely block light. In other words, after installing a curtain of high brightness and a curtain of low brightness (mostly black) at the same time, light curtains can be used to alleviate light transmission or dark curtains. Blocking method was used.

However, in the case of the blinds and curtains as described above, a separate installation space is required inside the glass window, and there is a problem in that it is impossible to control the amount of light transmitted. In addition, when using a plurality of curtains different in color as described above there was a problem that the installation space is wide.

In order to solve this problem, a technique for controlling the amount of light transmitted using a polarizing glass has been proposed, for example the Republic of Korea Utility Model No. 1998-025769.

The polarization phenomenon refers to a phenomenon in which only light in the same direction as the polarization axis formed in an arbitrary direction on the polarizing plate or the polarizing film is transmitted among the light incident on the polarizing plate or the polarizing film. Therefore, when there are dual polarizing plates having the same polarization axis in the same direction, the same light as both polarization axes may be transmitted. However, if one polarizing plate is rotated, the amount of transmitted light decreases as the angles of both polarization axes are different. When the angles of both polarization axes are 90 °, light is hardly transmitted.

The public utility model intends to control the amount of light transmission by rotating one glass by using two sheets of glass having a polarizing function to adjust the angle of the polarization axis of both glasses between 0 ° and 90 °.

However, in the case of the open utility model, a circular glass window was used to rotate the polarizing glass, and in view of the fact that the shape of the glass window is rectangular, there is a problem in that the application of the open utility model is difficult.

Also. When the polarizing glass as described above is applied to a rectangular glass window, the polarizing glass can be rotated to adjust or block the amount of light transmitted, but there is a problem that cannot be used because the glass window cannot be rotated.

The present invention has been presented to solve the above problems, and an object of the present invention is to apply a circular polarizing plate so that a polarization phenomenon can be used for a typical transparent transparent substrate, and the polarizing plate can cover the entire area of the transparent substrate. It is to provide a blind structure using a polarizing film that can completely and efficiently control the amount of light transmitted from the outside.

1 is an external perspective view of a blind structure using a polarizing film according to the present invention.

Figure 2 is an exploded perspective view of the blind structure using a polarizing film according to the present invention.

3 is a cross-sectional view of the blind structure using a polarizing film according to the present invention.

Figure 4 is a view for explaining the operation of the blind structure using a polarizing film according to the present invention.

*** Explanation of symbols on the main parts of the drawing ***

10: housing 12, 14: transparent substrate

20: polarizing plate 30: first polarizing plate

40: second polarizing plate 50: driving part

In order to achieve the above object, the blind structure using a polarizing film according to the present invention, a blind structure using a polarizing film that can adjust the amount of light transmitted from the outside by using a polarization phenomenon, the outline of the blind structure Forming housing; Two transparent substrates fixed to the housing; A polarizing plate disposed between the transparent substrates and mounted to the housing, the polarizing plate having a polarization axis transmitting light in one direction; A plurality of products disposed in a horizontal direction between the front of the polarizing plate and one of the transparent substrates and having a disk shape in which a plurality of polarizing axes are formed in the same direction as the polarizing axis of the polarizing plate, and rotatable at a predetermined angle by interlocking with each other. 1 polarizing disc; It is arranged in the horizontal direction between the rear surface of the polarizing plate and the other one of the transparent substrate, and forms a disk shape formed with a plurality of polarization axes in the same direction as the polarization axis of the polarizing plate, a plurality of rotatable mutually interlocked by mutually interlocking A second polarizing disc; And a driving unit including a first rotating unit for rotating at least one of the first polarizing plates and a second rotating unit for rotating at least one of the respective second polarizing plates, wherein each second polarizing plate has a center point. It is arrange | positioned so that a predetermined distance may shift from each center point of each 1st polarizing disc.

In addition, in order to achieve the above object, another embodiment of the blind structure using a polarizing film according to the present invention, the housing forming the outer frame of the blind structure; Two transparent substrates fixed to the housing; A polarizing film having a polarization axis transmitting light in one direction and coated on at least one of the transparent substrates; A plurality of first polarizing plates disposed in a horizontal direction between the transparent substrates, forming a disc shape in which a plurality of polarizing axes are formed in the same direction as the polarizing axes of the polarizing film, and rotatably interlocked with each other by interlocking side surfaces thereof; It is disposed in the horizontal direction between the back of each first polarizing plate and one of the transparent substrate, and forms a disk shape formed with a plurality of polarization axes in the same direction as the polarization axis of the polarizing film, the mutual side surfaces are interlocked with each other by a predetermined angle A plurality of rotatable second polarizing plates; And a driving unit including a first rotating unit for rotating at least one of the first polarizing plates and a second rotating unit for rotating at least one of the respective second polarizing plates, wherein each second polarizing plate has a center point. It is arrange | positioned so that a predetermined distance may shift from each center point of each 1st polarizing disc.

Preferably, the side surfaces of the first polarizing plate and the second polarizing plate are serrated, or fine unevenness is formed on the side surfaces of the first and second polarizing plates.

Also, the driving unit rotates the first polarizing plate and the second polarizing plate at an angle of 0 ° to 90 °.

Hereinafter, with reference to the accompanying drawings will be described in detail the advantages, features and preferred embodiments of the present invention.

1 is an external perspective view of a blind structure using a polarizing film according to the present invention, Figure 2 is an exploded perspective view of the blind structure using a polarizing film, Figure 3 is a cross-sectional view of the blind structure using a polarizing film. As shown in Figures 1 to 3, the blind structure using a polarizing film according to the present invention has a conventional rectangular double transparent substrates (12, 14) and a housing 10 for holding and fixing both transparent substrates; The polarizing plate 20 having the polarization axis 22 in a predetermined direction is formed between the two transparent substrates 12 and 14, and the polarization axes 32 and 42 are formed in the same direction as the polarization axis 22 of the polarizing plate, and the front side of the polarizing plate 20 is formed. And a plurality of first polarization discs 30 and second polarization discs 40 which are disposed on the rear surface and the back surface, and interlock with each other to rotate the first polarization disc and the second polarization disc by gear operation. The driving unit 50 is provided. The first polarizing plate 30 and the second polarizing plate 40 are simultaneously engaged with the driving unit 50, and rotate by the same angle at the same time by the operation of the driving unit.

Transparent substrates 12 and 14 according to the present invention is to use the glass used in a conventional glass window, it is a matter of course that a transparent synthetic resin or tempered glass can be used as necessary.

The polarizing plate 20 according to the present invention is provided between both transparent substrates with substantially the same size as the transparent substrates 12 and 14, and is disposed between the first and second polarizing plates 30 and 40. The first polarizing plate and the second polarizing plate to prevent friction or mutual interference during operation. The polarizing plate 20 is provided with a polarization axis 22 in a predetermined direction (X-axis direction or Y-axis direction), so that light passing through the polarizing plate passes only one light in the axial direction. 1 to 3 illustrate the case where the polarization axis of the polarizing plate is formed in the X-axis direction.

Each first polarizing plate 30 according to the present invention is formed with a dense tooth 36 on the side in the shape of a disc of a predetermined size, and is disposed in a state where the teeth on the side of each other are engaged with the front of the polarizing plate 20. . Therefore, when one first polarizing plate 30 is rotated by a predetermined angle, the adjacent first polarizing plate 30 is moved at the same angle by interlocking, and eventually, the entire first polarizing plate 30 is rotated at the same angle. . In addition, the second polarizing plate 40 has the same shape and structure as that of the first polarizing plate 30, and is disposed in a state in which teeth 46 on the side surfaces of the polarizing plate 20 are engaged with each other. It works on the same principle.

In order to manufacture the first polarizing disc 30 and the second polarizing disc 40, the polarizing films 34 and 44 may be coated on a transparent acrylic plate, and then cut into a disc shape having a side surface having a sawtooth shape. At this time, the first polarizing disk 30 and the second polarizing disk 40 are preferably manufactured in the same size and shape.

The first polarizing plate 30 and the second polarizing plate 40 are formed with polarization axes 32 and 42 in the same direction (X axis direction) as the polarization axis 22 of the polarizing plate 20. The light in the X axis direction is transmitted as it is. However, when the first polarization disc 30 and the second polarization disc 40 are rotated by a predetermined angle, an angle is generated between the polarization plate 20 and the polarization axis of the polarization disc, thereby reducing the amount of transmitted light.

At this time, the center points of each of the first polarization disc 30 and the second polarization disc 40 do not coincide with each other and are formed to be spaced apart from each other by a predetermined distance. That is, by slightly displacing the first polarization disc 30 and the second polarization disc 40, light transmitted from the outside is incident on the first polarization disc or the second polarization disc. Preferably, each of the second polarization discs 40 is arranged at a position covering the space between the first polarization discs 30 adjacent to each other.

For example, with respect to one first polarizing plate A, the first polarizing plate adjacent to A and X axes is the first polarizing plate adjacent to B, A and Y axes to the Y, and X axes, respectively. When the adjacent first polarizing plate is referred to as D, the center point between A, B, C, and D is to be the center point of the second polarizing plate E. That is, the X coordinate x of the contacts of A and B and the Y coordinate y of the contacts of A and C become X, Y coordinate values of E. Therefore, the 2nd polarizing plate E covers the space (gap) which arises between 1st polarizing plates A, B, C, and D. FIG. In this case, when the size of each polarizing plate is reduced, the space between the polarizing plates can be further reduced, and the area between each of the first and second polarizing plates or the second polarizing plate adjacent to the top, bottom, left, and right sides of the blind structure (not covering each other) Area) to make the housing thicker. Therefore, since the first polarization disc and the second polarization disc cover the entire area of the blind structure, external light is incident on at least one of the first polarization disc and the second polarization disc.

In the above example, the first polarization disc 30 has been described as a reference, but in reverse, the first polarization disc is equivalent to covering a space (gap) generated between the adjacent second polarization discs 40.

The driving unit 50 according to the present invention rotates a predetermined angle by simultaneously driving the first polarizing plate 30 and the second polarizing plate 40, for this purpose has a structure that meshes with the teeth 36 of the first polarizing plate The structure which meshes with the tooth | gear 46 of the 1st rotating part 52 and the 2nd polarizing disk consists of a 2nd stage structure of the 2nd rotating part 54 which has. As described above, when each of the first polarization disc 30 and the second polarization disc 40 drives only one polarization disc, the driving force is transmitted to the adjacent first polarization disc or the second polarization disc and the first polarization disc Or the whole second polarizing plate is moved. Therefore, the driving unit 50 may drive one of the first polarizing plate 30 and the second polarizing plate 40 positioned at the corners of the blind structure. In addition, the driving unit for driving the first polarizing disk and the driving unit for driving the second driving disk may be provided separately, of course.

Therefore, when the driving unit 50 is pushed into the blind structure, the first polarizing plate 30 and the second polarizing plate 40 of the corners interlocked with the driving unit rotate, and the adjacent first polarizing plate and the second interlocking plate which are engaged with each other are engaged. The polarizing disc is rotated together. This driving force is transmitted through each polarizing plate, and in turn, rotates the entire first polarizing plate 30 and the second polarizing plate 40 by the same angle. Similarly, when the driving unit 50 is pulled out, the first polarizing plate 30 and the second polarizing plate 40 positioned at the corners rotate in the opposite directions, and the driving force is transmitted to each other so that the entire first polarizing plate and the second polarizing plate are rotated. The disc rotates in the reverse direction and returns to its original state. Of course, the polarizing disc rotates when the driving unit is pulled out and the polarizing disc returns to its original state when it is pushed in.

The driving unit 50 may rotate the first polarization disc 30 and the second polarization disc 40 up to 90 °. Therefore, the first polarizing plate and the second polarizing plate can rotate from 0 ° to 90 °.

When the first polarization disc 30 and the second polarization disc 40 are rotated, the angle difference between the polarization axis 22 of the polarizing plate 20 and the polarization axes 32 and 42 of each polarization disc is equal to the rotation angle of the polarization disc. As the angle difference increases, the amount of light passing through the blind structure decreases. Finally, when the first polarizing plate 30 and the second polarizing plate 40 are rotated by 90 °, the blind structure is perpendicular to the polarization axis 22 of the polarizing plate 20 and the polarization axes 32 and 42 of each polarizing plate. You can completely block the light that passes through it. Therefore, the amount of light transmitted can be arbitrarily adjusted according to the needs of the user.

When the size of the blind structure is small, the driving unit 50 may be operated by the user by hand because the number of the polarizing discs 30 and 40 to be interlocked is relatively small. However, when the size of the blind structure increases to the size of a general window, the number of polarizing discs 30 and 40 to be interlocked increases, which increases the resistance, making it difficult for a person to operate by hand. Therefore, in this case, the driving unit is driven using a driving motor that pushes and pulls the driving unit. In this case, the driving shaft of the driving motor may be directly rotated by interlocking with the first polarizing plate 30 and the second polarizing plate 40 positioned adjacent to the edge of the blind structure.

4 is a view for explaining the operation of the blind structure using a polarizing film according to the present invention, showing the operation of the first polarizing plate 30 and the second polarizing plate 40 in accordance with the operation of the driving unit 50. . 4A illustrates a state of the first polarizing plate 30 and the second polarizing plate 40 before the driving unit 50 is operated. FIG. 4B illustrates the first polarizing plate 30 and the first polarizing plate 30 by operating the driving unit 50. The state which rotated the 2nd polarizing plate 40 90 degrees is shown. In addition, FIGS. 4A and 4B illustrate a view seen from the rear direction of the blind structure in order to show the linkage between the driving unit and each polarizing plate in more detail.

In the case of FIG. 4A, since the first polarization disc 30 and the second polarization disc 40 do not rotate, that is, have a rotation angle of 0 °, the polarization axis 22 of the polarization plate 20 and the polarization axis of each polarization disc (32, 42) are arranged in the same X axis direction. That is, the angle between the polarization axis 22 of the polarizing plate 20 and the polarization axes 32 and 42 of each polarizing plate 30 and 40 maintains 0 °. Therefore, the light incident to the blind structure passes through the second polarizing plate 40 and transmits only the light along the X axis, and the light in the X axis direction passes through the polarizing plate 20 and the first polarizing plate 30 as it is. do. That is, external light is transmitted almost as it is without filtration.

However, when the driving unit 50 is operated to rotate the first polarizing plate 30 and the second polarizing plate 40 by 90 °, the state becomes as shown in FIG. 4B, and the polarization axes 32 and 42 of each polarizing plate are Y. FIG. Arranged in the axial direction. At this time, since the polarization axis 22 of the polarizing plate 20 is formed in the X-axis, the polarization axis of the polarizing plate and the polarization axis of each polarizing plate become vertical.

Therefore, only the light in the Y-axis direction is transmitted to the portion where the second polarizing plate 40 is disposed while external light is incident on the blind structure, and is transmitted without being filtered to the portion where the second polarizing plate is not disposed. Most of the light in the Y-axis direction passing through the second polarizing plate 40 is blocked by the polarization axis 22 in the X-axis direction while passing through the polarizing plate 20, and the light in the partially transmitted X-axis direction is also blocked by the first polarization. The disk 30 is blocked by being caught by the polarization axis 32 in the Y-axis direction. In addition, light that does not pass through the second polarizing plate 40 passes through the polarizing plate 20, and only light in the X-axis direction is transmitted, and the light is again polarized in the Y-axis direction of the first polarizing plate 30. Will be blocked. As a result, the light flowing from the outside is mostly blocked by the blind structure, so that almost no light is transmitted to the inside.

An application example and a modification of the blind structure using the polarizing film according to the present invention will be described below.

Application example

The blind structure using the polarizing film according to the present invention can be applied to various articles in addition to applying to a blind structure such as a common glass window. For example, by reducing the size of the blind structure can be used as a scientific instrument for explaining the polarization phenomenon, or can be used as a toy for children. In addition, when the glass of the vehicle is replaced, the light transmittance can be freely adjusted so that it can be used instead of sunning, and also prevents glare of the driver.

Variant

1. Instead of the polarizing plate 20 according to the present invention, a thin polarizing film or a polarizing film can be used, in which case the thickness of the blind structure can be made thinner. In this case, the polarizing film or the polarizing film may be moved or dragged due to the rotational operation of each of the polarizing plates 30 and 40 disposed at the front and the rear, so that both ends are firmly fixed to the housing 10.

2. Instead of the polarizing plate 20 according to the present invention can be used by coating a polarizing film on the transparent substrate 12, 14, in this case it is necessary to coat only one of the front transparent substrate or the rear transparent substrate. At this time, the separation plate is further provided between the first polarizing plate 30 and the second polarizing plate 40 so as not to cause mutual interference while the two polarizing plates operate. The separating plate may be provided at the same position as the polarizing plate, and a transparent plate or a polarizing plate having a polarization axis in the same direction as the polarizing film is used.

3. Without forming the side surface of the polarizing plate (30, 40) in the shape of a sawtooth can be formed fine concavo-convex like the side of the coin. When the side surface of the polarizing plate is formed into a sawtooth shape, the teeth 36 and 46 are visually noticeable, which may damage the aesthetics. Therefore, a friction surface made of fine irregularities such as coins is formed on the side surfaces of the polarizing discs 30 and 40, and the sides of the polarizing discs are in close contact with each other. In this case, when one polarizing plate is rotated, the adjacent polarizing plate and the side are interlocked and interlocked to rotate together.

As described above, the present invention has a remarkable effect of controlling the amount of light transmitted from the outside by rotating the polarizing plate about the fixed polarizing plate to adjust the angle between the polarizing plate and the polarizing plate.

In other words, the blind structure using a polarizing film according to the present invention,

First, it is possible not only to apply a circularly polarized circular rotatable disk to a glass window made of a rectangular shape, but also to be applied to any existing window glass of any shape other than a square, so that a wide range of application is possible.

Secondly, the light transmittance can be freely adjusted according to the rotation angle of the polarizing disc, so that the brightness of the blind structure can be easily adjusted.

Third, because it is composed of a glass window and integrated, the installation space is saved compared to the case of installing a curtain or blind structure in addition to the glass window,

Fourthly, when rotating the polarizing disc with the drive motor can eliminate the inconvenience that the user must operate manually,

Fifth, the wide range of applications such as vehicles, scientific equipment, toys, etc., especially when used for the glass of the vehicle, the driver can arbitrarily adjust the brightness of the blind structure can be used as a substitute for the setting as well as the degree of setting Effect,

Finally, various modifications may be made, such as coating a polarizing film on glass instead of a polarizing plate or forming the side of the polarizing plate with fine irregularities like coins.

While the preferred embodiments of the present invention have been described using specific terms, such descriptions are for illustrative purposes only, and it is understood that various changes and modifications may be made without departing from the spirit and scope of the following claims. 13)

Claims (5)

As a blind structure using a polarizing film that can control the amount of light transmitted from the outside by using a polarization phenomenon, A housing forming an outline of the blind structure; Two transparent substrates fixed to the housing; A polarizing plate disposed between the transparent substrates and mounted to the housing, the polarizing plate having a polarization axis transmitting light in one direction; It is disposed in the horizontal direction between the front of the polarizing plate and one of the transparent substrate, and forms a disk shape formed with a plurality of polarization axes in the same direction as the polarization axis of the polarizing plate, and interlocking with each other side to rotate at a predetermined angle A plurality of first polarizing discs; Disposed in a horizontal direction between the rear surface of the polarizing plate and the other one of the transparent substrates, forming a disc shape having a plurality of polarization axes formed in the same direction as the polarization axis of the polarizing plate, and interlocking with each other to rotate at a predetermined angle. A plurality of second polarizing discs; And A driving part including a first rotating part for rotating at least one of the first polarizing discs and a second rotating part for rotating at least one of the second polarizing discs, Each of said second polarizing discs is disposed so that each center point is shifted by a predetermined distance from each center point of said each of said first polarizing discs. As a blind structure using a polarizing film that can control the amount of light transmitted from the outside by using a polarization phenomenon, A housing forming an outline of the blind structure; Two transparent substrates fixed to the housing; A polarizing film having a polarization axis transmitting light in one direction and coated on at least one of the transparent substrates; A plurality of first polarizing discs disposed in the horizontal direction between the transparent substrates, forming a disc shape in which a plurality of polarizing axes are formed in the same direction as the polarizing axis of the polarizing film, and rotatably interlocked with each other by interlocking side surfaces thereof. ; Disposed in a horizontal direction between the rear surface of each of the first polarizing discs and one of the transparent substrates, forming a disc shape in which a plurality of polarization axes are formed in the same direction as the polarization axis of the polarizing film, and interlocking with each other by mutually engaging side surfaces. A plurality of second polarizing discs rotatable at a predetermined angle; And A driving part including a first rotating part for rotating at least one of the first polarizing discs and a second rotating part for rotating at least one of the second polarizing discs, Each of said second polarizing discs is disposed so that each center point is shifted by a predetermined distance from each center point of said each of said first polarizing discs. The method according to claim 1 or 2, Side surfaces of the first polarizing plate and the second polarizing plate has a sawtooth shape, the blind structure using a polarizing film. The method according to claim 1 or 2, The blind structure using a polarizing film, characterized in that the fine irregularities are formed on the side of the first polarizing plate and the second polarizing plate. The method according to claim 1 or 2, And the driving unit rotates the first polarizing plate and the second polarizing plate at an angle of 0 ° to 90 °.