JP2544660Y2 - Roof screen with adjustable light intensity - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof screen capable of lighting even when the screen is half-opened or fully closed and capable of finely adjusting the amount of light.

[0002]

2. Description of the Related Art In a conventional roof screen, the only way to open and close a screen is to open, close, or partially open a seat.

[0003]

Therefore, the light amount can be adjusted only by a rough adjustment such as half-opening or full closing. In this case, when sunlight is strong, when the screen is in a half-open state, light is intensively applied only to the opened portion, and a good lighting state cannot be obtained.

[0004]

According to the present invention, one end of a sheet having slits formed at appropriate intervals in the longitudinal direction is fixed, and the other end is folded back through a sheet receiving shaft. The screen is half-opened by winding it around the sheet take-up shaft at one end of the sheet and using a roof screen that can adjust the amount of light so that the sheet receiving shaft provided at the folded part of the sheet can be pulled out and stored. Alternatively, the light can be collected even when fully closed, and the light amount can be finely adjusted.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

A is the roof screen device of the present invention, which can be installed in various places. Specifically, the roof screen device is provided near the ceiling inside and outside the room, and is arranged at a place where the lighting plate is installed on the roof. Things.

Reference numeral 1 denotes a sheet, which is formed in a band shape, and has slits 2, 2,... Formed at predetermined intervals in the longitudinal direction. The slit 2 is formed in the width direction (the direction orthogonal to the longitudinal direction of the sheet). The slit 2
Is divided into a plurality of parts at predetermined intervals in the longitudinal direction (the width direction of the sheet 1), and is formed as a point-like long hole.

The sheet 1 has one end fixed and the other end wound around a sheet winding shaft 3. Specifically, the sheet winding shaft 3 is provided inside the sheet storage case 4, and the sheet 1 is wound around the sheet winding shaft 3 and stored in the sheet storage case 4. Things.

The sheet take-up shaft 3 is fixed to a wire take-up pulley 7 described later in the sheet storage case 4 and integrally rotates.

The other end of the sheet 1 is fixed to the edge of the sheet storage case 4, but may be provided at another location instead of the sheet storage case 4. It may be fixed to the end of the opening. As described above, it is preferable that the sheet winding shaft 3 side of the sheet 1 and the fixed end side are in a state of being close to each other.

The sheet 1 is folded in two between the fixed end and the sheet winding side, and a sheet receiving shaft 5 is provided at the folded portion, and the sheet receiving shaft 5 is moved in the front-rear direction. Thereby, the seat 1 is opened and closed.

The sheet receiving shaft 5 preferably has a small diameter, and the upper and lower sheets 1 and 1 overlapping from the folded portion of the sheet 1 are brought into an extremely close state. It is preferable that the seat receiving shaft 5 is formed in an axial rod shape and has a smooth surface.

As another embodiment of the sheet receiving shaft 5, as shown in FIG. 7, a support rod 5a and a rod-shaped rotary cylinder 5 are provided.
The rod-shaped rotary cylinder 5b is rotatably inserted into the supporting rod 5a.

Further, as another embodiment of the sheet receiving shaft 5, as shown in FIGS. 10 and 11, a sheet receiving roller 5c and an auxiliary roller 5d are provided, and an auxiliary roller is provided near the sheet receiving roller 5c. 5d is provided.

Specifically, the sheet receiving roller 5c and the auxiliary roller 5d are provided side by side in parallel, and are supported at both longitudinal ends by flange plates 5e, 5e.

The sheet 1 is once folded by the sheet receiving roller 5c, and the sheets 1, 1 which are vertically overlapped by the auxiliary roller 5d are brought into a close state.

The sheet receiving shaft 5 is wound on a wire winding pulley 7 provided at three places of the sheet winding shaft by a wire w via a passive pulley 6 to wind the sheet 1 around the sheet winding shaft 3. It is wound in the opposite direction.

The wire take-up pulley 7 is provided so as to rotate together with the rotation axis of the sheet take-up shaft 3, and is formed in a frustoconical shape on both sides of the sheet take-up shaft 3 (FIG. 1). And FIG. 6). A taper is provided so that the diameter becomes smaller toward the tip.
The winding direction is reverse winding between the sheet 1 and the wire w.
Further, assuming that the diameter of the sheet winding shaft 3 is φ, the diameter of the wire winding pulley 7 is configured to be φ / 2, whereby the speed of pulling out and storing the sheet 1 and the speed of the wire w are reduced. Synchronized.

Due to the frusto-conical shape, the sheet 1 is wound so that the diameter of the wire winding pulley 7 increases as the winding thickness of the sheet 1 increases. Also in this case, the speed of pulling out and storing the sheet 1 and the speed of the wire w are synchronized.

In some cases, the wire take-up pulley 7 may be formed in a cylindrical shape.

The passive pulley 6 is fixed to the opposite side of the sheet storage case 4 at an opening for lighting in the ceiling, and a closed frame 8 is provided above the passive pulley 6. Specifically, the shaft 6b fixed to the pulley bearing 6a of the passive pulley 6 penetrates the support frame 6c, and is always drawn to the support frame 6c side by the elastic body 6d.

Further, as shown in FIG. 9, the passive pulley 6 is disposed via an elastic body 6d such as a coil spring, and the wire w is wound around the passive pulley 6.

[0023]

The operation will be described with reference to the operation of shifting the screen from the open state to the closed state.

When the sheet winding shaft 3 is rotated by a motor such as a motor, the wire winding pulley 7 is rotated, and the wire w draws the sheet receiving shaft 5 to the passive pulley 6 via the passive pulley 6. At this time, the sheet 1 wound around the sheet receiving shaft 5 is folded at five places of the sheet receiving shaft and moves together with the sheet receiving shaft 5 to the end opposite to the opening.

With respect to the seat 1, the seat receiving shaft 5 can be stopped at an appropriate position in the opening, so that the seat 1 can be in a half-open state. Further, when the sheet receiving shaft 5 is once stopped at an appropriate location and then slightly moved, the slits 2, 2,... Formed in the upper and lower sheets 1, 1 coincide with the same location. Light is collected between the slits 2 and 2 having the maximum slit width L (see FIG. 5).

When the fine movement of the sheet receiving shaft 5 is appropriately adjusted, the upper and lower slits 2, 2,... Are displaced, and the relative slit width L becomes small, and finally, when this width L becomes zero (see FIG. 3), Can block light.

If the upper and lower slits 2, 2,... Slightly cross each other and the relative slit width L is appropriately reduced (see FIG. 4), the amount of light collected can be adjusted by the slits 2, 2,.

[0028]

According to the present invention, one end of a sheet 1 having slits 2, 2,... Formed at appropriate intervals in the longitudinal direction is fixed, and the other end is folded back through a sheet receiving shaft 5. The sheet 1 is wound around a sheet take-up shaft 3 at one end side of the sheet 1 to provide a roof screen capable of adjusting a light amount provided so that a sheet receiving shaft 5 provided at a folded portion of the sheet 1 can be pulled out and stored. Thus, first, the light amount can be finely adjusted, and secondly, the screen can be easily fully opened, fully opened, or half-opened, and the like.

To explain these effects in detail, first, the folded sheet 1 has slits 2, 2,.
Are formed at a predetermined pitch, for example,
In the state of FIG. 3, the upper slit 2 and the lower slit 2
2 intersect with each other, and the amount of light from the upper slit 2 is blocked by the closed surface between the lower slits 2. That is, the relative slit width L is set to zero. For this reason, it is possible to make a state in which the amount of light hardly enters, and to form a dark room.

Further, when slightly rewinding and rewinding from the state shown in FIG. 3 to the state shown in FIG. 4, a part of the upper slit 2 and a part of the lower slit 2 are overlapped.
When the relative slit width L is set to an appropriate small width, a part of the light amount enters the room, and an appropriate illuminance can be obtained.

Further, in the case of FIG.
And the lower slit 2 completely overlap, that is, the relative slit width L can be fully opened,
It is possible to obtain the full amount of light entering from 2.

As described above, by slightly shifting the upper and lower slits 2 and 2, the light quantity can be adjusted steplessly.

In the roof screen device of the present invention, when the sheet receiving shaft 5 is pulled toward the front side, the entire surface can be covered, and the sheet receiving shaft 5 can be placed on the base side (the sheet storage case 4 side). By moving it, it can be fully opened and at a position intermediate with the above-mentioned closing, that is,
It can be set to an appropriate half-open state.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a sectional view of FIG.

FIGS. 3 to 5 are sectional views showing the operation of the present invention.

FIG. 6 is a plan view of the present invention.

FIG. 7 is a perspective view of a seat receiving shaft portion.

FIG. 8 is a plan view of a passive pulley.

FIG. 9 is a perspective view of another embodiment of the present invention in which the position of the passive pulley is changed.

FIG. 10 is a sectional view of another embodiment of a seat receiving shaft portion.

11 is a perspective view of a main part of FIG. 10;

[Explanation of symbols]

 1 1 Sheet 2 2 Slit 3 3 Sheet winding shaft 4 5 Sheet receiving shaft

Claims (1)

(57) [Scope of request for utility model registration] An end of a sheet having a slit formed at an appropriate interval in a longitudinal direction is fixed, and the other end is folded back through a sheet receiving shaft to form a sheet winding shaft at one end of the sheet. A light-adjustable roof screen characterized by being provided so that a sheet receiving shaft provided at a folded portion of the sheet can be pulled out and stored.