JP2008285876A - Blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain daylighting in part even if inclining slats and moreover to facilitate operation with a simple structure. <P>SOLUTION: Each of a plurality of slats 2 mounted to ladder cords 1 is composed of a light transmitting part 2A and a light shading part 2B formed along the longitudinal direction. The light transmitting parts 2A of the vertically adjoining slats 2 are arranged alternately from the side face view, and two different slat spaces d<SB>1</SB>, d<SB>2</SB>are provided so that the light transmitting parts 2A of the adjoining slats 2 overlap each other when inclining the slats 2 in one direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a blind as an interior for opening and closing a plurality of slats (blades).

  In recent years, energy conservation activities have been actively performed due to environmental problems such as global warming. The same applies to offices such as offices, but in order to prevent reflection on the screen of the PC, the blinds at the windows are generally kept lowered, and lighting by the ceiling light is used even near the windows. There are many cases. With respect to these problems, in the prior art, consideration is given to appropriate lighting by dividing the blinds into a plurality of groups in the vertical direction and individually opening and closing them.

  As a prior art, two or more shafts are horizontally arranged in the head box, a ladder cord pair for opening and closing each slat set is wound around each shaft, and one slat set is opened and closed separately. A Venetian blind that vertically arranges the open / close pole of the blind, and divides a large number of slats into two or more sets in the vertical direction, and the worm gear fitted above the open / close pole is fixed to the shaft. It is known that it can be partially opened and closed by meshing with a wheel and selectively rotating each shaft (see Patent Document 1). In this configuration, each slat set can be easily opened and closed with a single opening / closing pole.

As another conventional example, there is known an omnidirectional blind capable of achieving sufficient shielding and daylighting partially simultaneously in the vertical direction. This is because a plurality of slats are arranged in the vertical direction, a lifting cord is inserted into a cord insertion hole provided in the slat, and the lifting cord is fixed to a bottom rail provided at the lower end of the slat, and is elongated in the head box. A pair of ladder tapes for tilting the slats wound in opposite directions on the rotating shaft supported in the direction are arranged at both edges in the width direction of the slats, and the pair of ladder tapes are connected by a slat placement cord. Then, the slat is held by the mounting cord, and the inclination angle of the slat is changed by forward and reverse rotation of the rotation shaft. A plurality of pairs of ladder tapes that are supported by a plurality of the rotation shafts in the head box, and a plurality of pairs of ladder tapes wound around the respective rotation shafts, a ladder tape provided with a placement cord, and a placement tape It is composed of other ladder tapes not provided with a cord, and a plurality of groups of slats are independently controlled for each group (see Patent Document 2).
JP-A-8-165870 (2nd page, FIG. 7) JP-A-8-82175 (2nd page, FIG. 3)

  Conventional blinds are divided into upper and lower slat groups, each mechanism is duplicated, the operation part and ladder code are complicated, the cost of parts and assembly is high, and the operation is also complicated was there. That is, the number of parts of the drive unit is also required for the number of sets of slats, the mechanism is complicated, and the cost is increased. In addition, ladder cords are required for the number of sets of slats, and handling is complicated and difficult to assemble. Further, the operability is complicated because each slat group is individually operated.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a blind that has a simple structure, is easy to operate, and enables a certain amount of light even in a light-shielded state where a slat is tilted.

  In order to achieve the above-mentioned object, the present invention comprises a plurality of slats attached to a ladder cord having a light transmission part and a light-shielding part formed along the longitudinal direction thereof. The light transmitting portions are arranged in a staggered manner when viewed from the side, two different slat intervals are provided, and the light transmitting portions of adjacent slats overlap when the slats are inclined in one direction.

  According to the present invention, the plurality of slats attached to the ladder cord are constituted by the light transmission part and the light shielding part formed along the longitudinal direction, and the light transmission parts of the slats adjacent to each other in the vertical direction are viewed from the side. As seen, they are arranged in a staggered manner, two different slat intervals are provided, and when the slats are tilted in one direction, the light transmission parts of adjacent slats overlap so that there are few component configurations and the structure is not complicated. The operability is easy, that is, the light is shielded by simply tilting the slat in one direction, but a certain amount of light can be taken.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a side cross section of a blind. A slat 2 is attached to a generally used ladder cord 1, and a partial width Wt of a short side W of the slat 2 is formed in the light transmitting portion 2A. The other is formed in the light shielding portion 2B, and the slats 2 are arranged so that the light transmitting portions 2A are staggered when viewed from the side, that is, right, left, right, left. Yes. The slat intervals d ₁ and d ₂ of the ladder cord 1 that supports and tilts each slat 2 are set to different values. That is, the slat interval was set to two different ones (d ₁ , d ₂ ).

  As an example of the structure of a blind to which such a slat 2 is applied, the one shown in FIG. 2 is widely known as a general structure. In this example, a plurality of slats 2 are attached between a pair of ladder cords 1, and the slats 2 are arranged between a head box 3 at the upper end and a bottom rail 4 at the lower end. Also, a lifting / lowering cord 5 is attached so as to penetrate the slat 2 up and down, and the angle of the slat 2 can be adjusted by operating the ladder cord 1 by turning the grip 7 of the multipole 6. is there. The upper part of the multipole 6 is connected to the universal joint 8. The cord tassel 9 at the lower end of the multipole 6 is connected to the lifting / lowering cord 5 for moving the lifting / lowering cord 5 and raising / lowering the slat 2. Such a blind structure is known. This known blind slat 2 is formed with a light transmitting portion 2A and a light shielding portion 2B as shown in FIG. 1, and is arranged as shown in FIG. Can be secured.

  FIG. 3 shows a state where the slats 2 are inclined in one direction, and a portion a where the light transmitting portions 2A of the adjacent slats 2 overlap each other is generated. In this state, partial lighting is possible in the portion a. That is, in the present invention, a certain amount of light can be taken in the portion a even in the tilted state of the slat 2 that has been completely shielded until now.

In order to make the blind completely shielded, the slats 2 are tilted in the direction opposite to that shown in FIG. 3, and the state shown in FIG. This is because the slat intervals d ₁ and d ₂ are different, and the inclined state of the slat 2 is as shown in FIGS.

  FIG. 5 is a perspective view showing an example of the slat 2, and the light transmission part 2A and the light shielding part 2B are simply formed by forming the slat 2 with a transparent material and coating only the light shielding part 2B. Can do. Alternatively, as shown in FIG. 6, the light transmission part 2 </ b> A can be formed by cutting out the slat 2. That is, the cutout portion is the light transmission portion 2A. As a material for forming the slat 2, plastic or metal is preferably used. Note that a slat 2 may be formed by bonding a light-transmitting material such as a plastic material to a light-shielding metal material or the like.

  In the above-described embodiment, all the slats 2 are formed by alternately arranging the light transmitting portions 2A and the light shielding portions 2B and arranging the slats at different intervals. It is also possible to adjust the amount of light at the time of lighting by using only the light transmitting part 2A and the light shielding part 2B (upper part, middle part or lower part).

In addition, since the distance between the slats 2 does not change even when tilted, the relationship shown in Expression (1) is established in order that transmission and shading function properly when d ₂ > d ₁ . There is a need.
W> d ₂ >W-2Wt> d ₁ (1)

  The blind according to the present invention can be used not only for interior use but also as a blind for automobiles. In the case of a type in which a gap is provided by the shape of the slat 2, it can also be used as a shutter of a radiator.

The side sectional view of the embodiment of the present invention. The perspective view of the whole blind. The side sectional view of a part of daylighting state. FIG. The perspective view of a slat. The perspective view of another slat.

Explanation of symbols

1 Ladder code 2 Slat 2A Light transmission part 2B Light shielding part d _1, d ₂ Slat interval

Claims (5)

A plurality of slats to be attached to the ladder cord are constituted by a light transmitting part and a light shielding part formed along the longitudinal direction thereof,
Arrange the light transmission parts of the slats adjacent to each other in a staggered manner when viewed from the side,
With two different slat spacings,
A blind characterized in that when the slats are tilted in one direction, the light transmission parts of adjacent slats overlap.   The blind according to claim 1, wherein the light transmission part is formed by using a part of a slat formed of a transparent material.   The blind according to claim 1, wherein the light transmission part is formed by cutting out a part of a slat.   The blind according to any one of claims 1 to 3, wherein a slat in which a light transmission part and a light shielding part are formed only on a part of the entire slat is used. When the width W of the short side of the slat, the width Wt of the light transmission portion, the slat spacings d ₁ and d _2, and d ₂ > d ₁ ,
W> d ₂ >W−2Wt> d ₁
The blind according to any one of claims 1 to 4, wherein the relationship is as follows.

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